00342    a2200121   4500020001500000082001500015100001900030245003400049260004600083300002000129650003500149650003600184  a8121902096  a632.8bMAN  aMandahar, C.L.  aIntroduction to plant viruses  aNew DelhibS. Chand & Companyc1978g1978  axvi,596p.c22cm  aViral and rickettsial diseases  aPlant injuries, diseases, pests