00696nam a2200193Ia 4500001001000000003000500010008004100015010001100056040000900067082002200076100006900098245009700167260002400264300001100288440004000299650010600339700002400445710003300469Para_2701CHAP220125s1981    xx            000 0 und d  a201195  cCHAP  aPA 632.96 B4 1980  aBeltsville Symposia in Agricultural Research (5: 1980: Maryland)  aBiological control in crop production  /c The BARC symposium committee, George C. Papavizas  aLondon  :b Granada  a461 p.  aPrevious symposia in this series; 5  aControl biológico de plagas  Control biológicio de malas hierbas  Control biológico de insectos  aPapavizas, George C  aThe Bare Symposium committes