124 с.

THE MATHEMATICS IN CERTAIN ELEMENTARY SOCIAL STUDIES IN SECONDARY SCHOOLS AND COLLEGES

By Eugene W. Hellmich

submitted in partial fulfillment of the requirements for the degree of doctor of philosophy in the faculty of philosophy, columbia university

Published with the Approval of Professor William D. Reeve, Sponsor

Bureau of Publications Шеarijtra (Hallegt. (Enlmnnta йпгоргяИи

new york ^ctty

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