Gupta, P.K. . Elements of Biotchnology / Textual Documents P.K. Gupta. - 1st ed / - Meerut : Rastogi Piblications , 1998. - viii, 602p. : ill ; 22cm. . Index ISBN: 81-7133-372-9 Subjects--Index Terms: Botany Agriculture Biotchnology Dewey Class. No.: 620.8 / Gu 959 El