000			00286nam a2200121Ia 4500
100			_aWorld Health Organization
020			_a92 4 157150 0
942			_cBK
245			_aBenzene
260			_aWorld Health Organization, Geneva _c1993
082			_aR363.7384 W.H.O./E.H.C.
300			_a156
999			_c32061 _d32061