000 00311nam a2200121Ia 4500
100 _aWorld Health Organization
020 _a92-4-154332-9
942 _cBK
245 _aMethylene health and safety guide
260 _aWorld Health Organization, Geneva
_c1987
082 _aR363.1796 W.H.O./H.S.G.
300 _a44
999 _c61996
_d61996