Autor
Bardell, Ross H.
2
Fuller, Gordon
2
Heimer, Ralph T.
2
Nichols, Eugene D.
2
Spitzbart, Abraham
2
Swokowski, Earl W.
2
Britton, Jack R.
1
Davis, Dale S.
1
Garland, E. Henry
1
Hoag, A. L.
1
Kocher, Frank
1
Kriegh, R. Ben
1
Leon, Stevens J.
1
Lottes, John J.
1
Mcneese, D. C.
1
Nadal de Filloy, Maria de la Victoria
1
Rutland, Leon W.
1
Swokowski, Earl
1
Whitesitt, J. Eldon
1