Mouzon, Olin T.
International resources and national policy
Harper, 1959
Buku Teks SO
Henry, Nelson B.
Rethinking science education the fifty-ninth yearbook of the national society for the study of education / edited by Nelson B. Henry
University of Chicago Press , 1960
Buku Teks
Rosnow, Ralph L.
Understanding Behavioral Science / Ralph L. Rosnow and Robert Rosenthal
McGraw-Hill, 1984
Buku Teks SO
Brecht, Bertolt, 1898-1956
Collected plays/Bertolt Brecht ; Edited by John Willett and Ralph Manheim
Eyre Methuen, 1979
Buku Teks SO
Digital image processing for remote sensing / edited by Ralph Bernstein
IEEE Press, 1978
Buku Teks SO