00772cam a22002537a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001600102100001800118245008400136260006300220300001900283490003300302650002800335650003700363650003500400650003100435700001900466830003300485CHAP20220329135003.0971013s1962            r     00010     d  a29100  a30072  a34184  cCHAP  a632.96bM2500aMcLeod, J. H.12aA review of the biological control attempts against insects and weeds in Canada  aBucks, England :bCommonwealth Agricultural Bureaux,c1962  a216 p.b: ilus 0aTechnical communicationv; 214aBiología económica.14aControl biológico de insectos.14aControl biológico de plagas.14aEntomología económica.0 aMcGugan, B. M.0 aTechnical communicationv; 2