Limited (search only) 15 1966
|
University of Minnesota
|
Limited (search only) no.20-23
|
University of California
|
Limited (search only) 21 1971
|
University of Minnesota
|
Limited (search only) NO23-26 1972-1976
|
The Ohio State University
|
Limited (search only) 23 1972
|
University of Minnesota
|
Limited (search only) no.24-26
|
University of California
|
Limited (search only) 24 1976
|
University of Minnesota
|
Limited (search only) 25 1976
|
University of Minnesota
|
Limited (search only) 26 1976
|
University of Minnesota
|
Limited (search only) 29 1976
|
University of Minnesota
|
Limited (search only) 30 1976
|
University of Minnesota
|
Limited (search only) 31 1977
|
University of Minnesota
|
Limited (search only) 32 1977
|
University of Minnesota
|
Limited (search only) 33 1977
|
University of Minnesota
|
Limited (search only) 35 1977
|
University of Minnesota
|
Limited (search only) no.36-37
|
University of California
|
Limited (search only) 36 1979
|
University of Minnesota
|
Limited (search only) no.38-39
|
University of California
|
Limited (search only) NO38-40 1978-1979
|
The Ohio State University
|
Limited (search only) 38 1978
|
University of Minnesota
|
Limited (search only) 39 1979
|
University of Minnesota
|
Limited (search only) 40 1979
|
University of Minnesota
|
Limited (search only) no.42 1981
|
University of Minnesota
|