000 00382cam a2200145ua 4500
003 OSt
008 251113b |||||||| |||| 00| 0 eng d
041 _aeng
082 _a628
_bWHO/EX
245 _aExpert committee on environmental sanitation /
260 _aGeneva :
_bWorld Health Organisation ,
_c1950.
300 _a36 ; .
490 0 _aWHO Technical report,
_v10
942 _cBK
999 _c4782
_d4782