003310000a22001330004500060000800000082001400008100001700022245003700039250000600076260003500082260000900117300000800126650006300134  a100  a632.8 BAW  aBawden, F.C.  aPlant viruses and virus diseases  a3  aUSA, Chromica botanica company  c1950  a333  aViral diseases - Plants/ viral diseases - plants - control