00343nam a2200121Ia 450000500170000000800410001702000150005805000230007310000220009624500370011826000370015565000290019220251229085757.0251229s9999    xx            000 0 und d  a0124805531  aSB 736   .M38 1991  aMatthews , R.E.F. 0aPlant Virology.cR.E.F Matthews   aSan Diegob Academic pressc1991  aVirus Diseases Of Plants