Singh,Nagendra Kr. Encyclopaedia of the world scientists. - A.P.H.Publishing Corporation, - New Delhi : A.P.H.Publishing Corporation, 2004. - xv, 962 p. : ill. ; 24 cm. - Vol. III . ISBN: 8176485608 Subjects--Topical Terms: Encyclopaedia. Dewey Class. No.: 509.2 SIN