“Ware, Gertrude May, 1882

A study of the conditions affecting the precise determination of zinc as the sulfide … Easton, Pa., Eschenbach printing co., 1919. 17, [1] p.

Columbia university, 1919, Ph. D.”

Reference Data:

A List of American Doctoral Disertations Printed in [1912]-1938, by Library of Congress, Flagg, Stephens, McNair and Jacobs, 1921, page 69