000 00286nam a2200109 4500
245 _aEnvironmental pollution by chemicals
_cby Colin,Walker
100 _aWalker,Colin
250 _a2nd. ed.
260 _aLondon
_bHutchinson of London
_c1975
300 _a72p. ; 24cm
082 _a614.7
_b WAL
999 _c18411
_d18411