AUTHOR
Beiser, Arthur
10
Parker, Sybil P.
10
Krauskopf, Konrad Bates 1910-
8
Enger, Eldon D.
7
Ross, Frederick C.
7
Krauskopf, Konrad Bates
6
Lapedes, Daniel N.
6
Tillery, Bill W.
6
Friedl, Alfred E.
5
Navidi, William Cyrus
5
De Vries, Louis 1885-
4
American Foundation for Continuing Education
3
Easton, Thomas A.
3
Educational Services, Inc
3
Mallinson, George Greisen 1917-
3
Aldridge, Bill
2
De Vries, Louis 1885-1976
2
Gale Group
2
Heath, Michael T.
2
Iowa. State College of agriculture and mechanic arts, Ames
2
Maurer, Robert
2
McCorkle, Paul 1890-
2
National Geographic Society
2
Rockcastle, Verne N.
2
Rowe, Mary Budd
2
Schmidt, Victor E.
2
Stanley, Jon
2
Sutton, C.R
2
Wadsworth, Harrison M.
2
Yelles, Marvin
2
Young, Louise B. ed
2
Aho, William
1
Anaxos, Inc
1
Baptiste, H. Prentice
1
Bender, Carl M.
1
Bendick, Jeanne
1
Blumberg, Avrom A.
1
Bonnet, Robert
1
Breuer, Hans 1933-
1
Carey Steven D.
1
Carey, Steven D.
1
Carre, Clive
1
Chapman, Stephen J.
1
Churchman, Charles West 1913-
1
Clarence J. West
1
Cohen, Morris Raphael 1880-1947
1
Columbia University. Teachers College. Bureau of Eductaional Research in Science
1
Criddle, Roy Allen
1
David I. Eggenberger...et al
1
Drabkin, I.E
1
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