000 00313nam a2200121Ia 4500
100 _aWorld Health Organization
020 _a92-4-154367-1
942 _cBK
245 _aTetradifon health and safety guide
260 _aWorld Health Organization, Geneva
_c1987
082 _aR363.1796/ W.H.O./H.S.G.
300 _a40
999 _c67568
_d67568