00405nam a2200121Ia 4500008004100000082002200041245005400063260002500117300000900142490008200151600001600233650003400249130903s9999    xx            000 0 und d  a632.38(047.3)  M4  aGuidelines for diagnostic work in plant virology.  aShanhuabAVRDCc1984  a39p.  aThe Asian Vegetable Research and Development Center Technical Bulletin, no.15  aGreen, S.K.  aPlant diseases,Virus diseases