00337nam a2200121Ia 4500008004100000082002200041100002500063245005000088250001200138260003700150300001000187650001800197140113s9999    xx            000 0 und d  a632.38(047.1)  J1  a" Smith, Kenneth M."  aRecent advances in the study of plant viruses  a2nd Ed.  b"London : J & A Churchill, 1951"  a300p.  aPlant viruses