00323nam a22001217a 4500 81-272-1372-1 D P Tripathi Introductory Plant Virology Ludhiana Kalyani 2004 555 history morphology and structure classification of plant viruses BBS 299224 299224 0 0 ddc 0 0 KAUCOAP KAUCOAP GEN 2016-03-09 0 632.8 TRI/IN KAU_COAP-2393A 2016-03-09 00:00:00 2018-06-11 BBS