003060000a22001330004500020001500000060000800015082002000023100002800043245003300071260003600104260000900140300000800149650001500157  a0198545266  a100  a632.  95042 GUN  aGunn D L, Stevens J G R  aPesticides and human welfare  aOxford, Oxford University Press  c1976  a278  aPesticides