Full view no.1-15(1935-1938)
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University of Illinois at Urbana-Champaign
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Full view no.1-19 1938
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University of Michigan
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Full view no.1-24 1933-40
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Cornell University
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Full view no.1 (1954)
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Columbia University
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Full view no.1 (rev.1956)
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Columbia University
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Full view no.1 (rev.1962)
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Columbia University
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Full view no.11-12 (rev.)
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Columbia University
|
Full view no.16-32
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University of Illinois at Urbana-Champaign
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Full view v.19
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University of Illinois at Urbana-Champaign
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Full view no.20A; rev.
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Columbia University
|
Full view v.20
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University of Illinois at Urbana-Champaign
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Full view no.20 1934
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University of Michigan
|
Full view no.20 (rev.1949)
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Columbia University
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Full view no.22-24
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Columbia University
|
Full view no.25
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Columbia University
|
Full view no.26-28
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Columbia University
|
Full view no.29
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Columbia University
|
Full view no.30
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Columbia University
|
Full view no.33
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Columbia University
|
Full view no.34
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Columbia University
|
Full view no.35 (rev.1955)
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Columbia University
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Full view no.35 (rev.1957)
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Columbia University
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Full view no.35 (rev.1961)
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Columbia University
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Full view NO36 1968
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The Ohio State University
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Full view no. 38(1965)
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University of Illinois at Urbana-Champaign
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Full view no.43 1967
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University of Michigan
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