000 00376nam a2200121 a 4500
020 _a9241544716
050 0 0 _aMED RA591
_bW67
245 0 0 _aOperation and maintenance of urban water supply and sanitation systems : a guide for managers
260 _aGeneva :
_bWorld Health Organization,
_c1994.
300 _aix, 102pg. :
_bill. ;
650 0 _aMunicipal water supply
942 _cBK
999 _c9780
_d9780