000 00397nam a2200157Ia 4500
008 210210b1991 xxu||||| |||| 00| 0 eng d
082 _a628 DUGE
100 _aDUGGAL (K N)
245 _aElements of public health engineering Ed.4
250 _a
260 _aND
_bS. Chand & Co. Ltd.
_c1991
300 _a488
650 _aPublic Health Engineering
690 _aEngineering
906 _a045968
999 _c95236
_d95236