Rajendran , P . The prehistoric cultures and encironment : a case study of Kerala / P. Rajendran. - New Delhi : Classical Publishing , 1989. - xiii, 175p. : ill., pict. ; 22cm . NULL ISBN: 817054100x Rs. 250.00 Subjects--Index Terms: ENVIRONDENT-KERALA Dewey Class. No.: 333.70095483 / RAJ/P