Encyclopaedia of the world scientists / edited by Nagendra Kr. Singh. - New Delhi : A P H Publishing, c 2004. - Vols. ; 25 cm. V. 4- (F to G) ; 326 326 ISBN: 81-7648-560-8 Subjects--Topical Terms: Scientists--Encyclopedias.--Biography Dewey Class. No.: 925.03 / E19