00506nam a2200181Ia 4500001000900000003000500009008004100014010001100055040000900066082001700075100002200092245008600114260003300200300001100233650002300244650003900267700001800306Para_509CHAP220125s1990    xx            000 0 und d  a199264  cCHAP  aPA 632.8 P57  aPirone, Thomas P.  aViral genes and plant pathogenesis  /c ed. by Thomas P. Pirone and Johmn G. Shaw  aNew York :b Spinger-Verlang  a215 p.  aGenética vegetal  aPlantas x enfermedades por virus   aShaw, John G.