00372nam a2200145Ia 4500001001000000003000500010008004100015010001100056040000900067100001800076245003600094260005800130300000900188650002900197Para_4571CHAP220125s1914    xx            000 0 und d  a203052  cCHAP  aNorton, Don C  aRoot knot  /c by Don C. Norton  aKingsville, Texas  :b Agricultural Extension Service  a8 p.  aRaíces x Enfermedades