00380nam a2200145Ia 4500008004100000082001800041100002100059245003700080250000600117260004300123300000800166650002300174650001800197653001900215170901s1957    xx            000 0 und d  a581.234bS55T  aSmith,Kenneth M. 0aTextbook of Plant Virus Diseases  a2  aLondonbJ. and A. Churchill Ltd.c1957  a652  aBotanical sciences  aPure Sciences  aPlant virology