Limited (search only) v.2-5(inc.) 1986-90
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University of Minnesota
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Limited (search only) v.6-7 1991-1993
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Northwestern University
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Limited (search only) v.6-9 1991/92-1995
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University of Minnesota
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Limited (search only) v.7 no.1
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Pennsylvania State University
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Limited (search only) v.7 no.2
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Pennsylvania State University
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Limited (search only) v.7 no.3
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Pennsylvania State University
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Limited (search only) v.8 no.1
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Pennsylvania State University
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Limited (search only) v.8 no.2
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Pennsylvania State University
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Limited (search only) v.8-10 1994-1996
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Northwestern University
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Limited (search only) v.9 no.1
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Pennsylvania State University
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Limited (search only) v.9 no.2
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Pennsylvania State University
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Limited (search only) v.10-13 1996-99
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University of Minnesota
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Limited (search only) v.10 no.2
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Pennsylvania State University
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Limited (search only) v.10 no.1
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Pennsylvania State University
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Limited (search only) v.11 no.1
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Pennsylvania State University
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Limited (search only) v.11 no.2
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Pennsylvania State University
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Limited (search only) v.11-15:no.1:inc. 1997-2001:May
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Northwestern University
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Limited (search only) v.12 no.1
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Pennsylvania State University
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Limited (search only) v.12 no.2
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Pennsylvania State University
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Limited (search only) v.13 no.1
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Pennsylvania State University
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Limited (search only) v.13 no.2
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Pennsylvania State University
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Limited (search only) v.14 no.1
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Pennsylvania State University
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Limited (search only) v.14 no.2
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Pennsylvania State University
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Limited (search only) v.14-v.15:no.1 (2000-01)
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University of Minnesota
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Limited (search only) v.15 no.1
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Pennsylvania State University
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