TY  - BOOK
AU  - Duggal, K. N.
TI  - Elements Of Environmental Engineering
SN  - 8121915473
AV  - TD153 .D87 2010
PY  - 2010///
CY  - New Delhi
PB  - S Chand & Company Ltd.
N1  - Includes Bibliographical references and index
ER  -