Full view no.6
|
University of Minnesota
|
Full view no.9
|
University of Minnesota
|
Full view no.9,11 1966
|
Cornell University
|
Full view no.10
|
University of Minnesota
|
Limited (search only) v.11 AG(1966)
|
University of Illinois at Urbana-Champaign
|
Limited (search only) v.13 MR(1967)
|
University of Illinois at Urbana-Champaign
|
Limited (search only) no.14 1968
|
Cornell University
|
Full view no.15
|
University of Minnesota
|
Full view no.15 1968
|
Cornell University
|
Full view no.16
|
University of Minnesota
|
Limited (search only) v.16 S(1969)
|
University of Illinois at Urbana-Champaign
|
Limited (search only) no.17-21
|
Cornell University
|
Limited (search only) no.17
|
University of Minnesota
|
Full view no.18
|
University of Minnesota
|
Full view no.19
|
University of Minnesota
|
Full view no.21
|
University of Minnesota
|
Full view no.22-28
|
Cornell University
|
Full view no.26 1971
|
The Ohio State University
|
Full view no.27
|
University of Minnesota
|
Full view no.28
|
University of Minnesota
|
Full view no.29
|
University of Minnesota
|
Full view no.29-32
|
Cornell University
|
Full view no.31
|
University of Minnesota
|
Full view no.33-36
|
Cornell University
|
Full view no.37 1986
|
Cornell University
|