000 00274nam a2200097Ia 4500
999 _c11000
_d11000
100 _aQuano E A R
245 _aPrinciples of Wastewater Treatment Vol-I: Biological Processes
260 _c1983
_bNATIONAL SERIVCE DEVELOPMENT BOARD
_aPhilippines
300 _av+314
942 _cBK