003220000a22001090004500 630 PAV Dr.Ravikumar, R proceedings of the fifth kerala science congress 28-30 January 1993 Kottayam India, State committe on science Technology and environment P536 BK 367653 367653 0 0 0 0 GIFT KAUCOAV KAUCOAV 2014-05-02 0 630 PAV KAU_COAV-F1797 2014-05-02 00:00:00 2022-05-12 BK