00644nam a22002177a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001600102100001800118245008400136260005500220300001100275490005300286650001600339650001800355830005300373CHAP20220329134129.0971013s1976            r     00010     d  a15873  a16845  a20927  cCHAP  a632.951bB400aBeynon, K. I.  aPersistence of insecticides and herbicides ; papers presented at a Symposium...  a(London) :bBritish Crop Protection Council,c1976  a277 p.  aBritish Crop Protection Council. Monographv; 1714aHerbicidas.14aInsecticidas.0 aBritish Crop Protection Council. Monographv; 17