000 00255nam a2200109Ia 4500
100 _aW.H.O/ T.R.S. No.798
942 _cBK
245 _aChemistry and specifications of pesticides
260 _aW H O, Geneva
_c1990
082 _aR363.7384 W.H
300 _a80
999 _c62023
_d62023