TY  - BOOK
AU  - DUGGAL K N
TI  - ELEMENTS OF PUBLIC HEALTH ENGINEERING
SN  - B0007CD2SS
U1  - 628 
PY  - 1980///
CY  - DELHI
PB  - S.CHAND & CO-1
KW  - "Environmental engineering,Sanitary and Muncipal Engg,Impact assessment"
ER  -