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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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Full view 1910
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University of Minnesota
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Full view 1910
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University of Illinois at Urbana-Champaign
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Full view 1912
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University of Illinois at Urbana-Champaign
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University of Minnesota
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University of Illinois at Urbana-Champaign
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Limited (search only) 1962
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Pennsylvania State University
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Pennsylvania State University
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Limited (search only) 1965
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Pennsylvania State University
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Limited (search only) 1966
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Pennsylvania State University
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Limited (search only) 1967
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Pennsylvania State University
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Limited (search only) 1968
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Pennsylvania State University
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Limited (search only) 1969
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Pennsylvania State University
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Limited (search only) 1970
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University of California
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Limited (search only) 1970
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Pennsylvania State University
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Limited (search only) 1971
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Pennsylvania State University
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Limited (search only) 1972
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Pennsylvania State University
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Limited (search only) 1973
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Pennsylvania State University
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Limited (search only) 1974
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Pennsylvania State University
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Limited (search only) 1975
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Pennsylvania State University
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Limited (search only) 1976
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Pennsylvania State University
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Limited (search only) 1977
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Pennsylvania State University
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Limited (search only) 1978
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Pennsylvania State University
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Limited (search only) 1979
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Pennsylvania State University
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Limited (search only) 1980
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Pennsylvania State University
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Limited (search only) 1981
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Pennsylvania State University
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Limited (search only) 1982-83
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Pennsylvania State University
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Limited (search only) 1984
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Pennsylvania State University
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Limited (search only) 1985
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Pennsylvania State University
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Limited (search only) 1986
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Pennsylvania State University
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Limited (search only) 1987
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Pennsylvania State University
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Limited (search only) 1988
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Pennsylvania State University
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Limited (search only) 1989 suppl.
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Pennsylvania State University
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Limited (search only) 1989
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Pennsylvania State University
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Limited (search only) 1990
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University of California
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Limited (search only) spr.1990
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Pennsylvania State University
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Limited (search only) 1991
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University of California
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Limited (search only) spr.1991
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Pennsylvania State University
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Limited (search only) spr.1992
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Pennsylvania State University
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Limited (search only) 1993
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University of California
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Limited (search only) spr.1993
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Pennsylvania State University
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Limited (search only) spr.1994
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Pennsylvania State University
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Limited (search only) 1997
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University of California
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Northwestern University
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Northwestern University
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Limited (search only) 2008
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University of California
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