00474nam a2200169Ia 4500001001000000003000500010008004100015010001100056040000900067082001700076100002100093245005900114260004600173300001100219440004600230650002800276Para_1608CHAP220125s1979    xx            000 0 und d  a204539  cCHAP  aPA 631.55 E5  aEnnis, W.B., ed.  aIntroduction to crop protection  /c ed. by W.B. Ennis  aMadison  :b American Society of Agronomy  a524 p.  aFundations for modern crop science series  aCosechas x perdidas de