Barish, N. N. (1957). Engineering enrollment in the United States. New York: New York University Press.
Παραπομπή Chicago StyleBarish, Norman N. Engineering Enrollment in the United States. New York: New York University Press, 1957.
Παραπομπή MLABarish, Norman N. Engineering Enrollment in the United States. New York: New York University Press, 1957.
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