TY  - BOOK
AU  - Victor M. Ehlers
AU  -  Ernest W. Steel, 
TI  - Municipal and rural sanitation. Ed 6
U1  - 628.7 
PY  - 1965///
CY  - New York
PB  - Mc Graw Hill Book Co
N1  - Victor M. Ehlers & Ernest W. Steel: Municipal and rural sanitation. Ed 6.  (6th Edition)  New York.  Mc Graw Hill Book Co, 1965.--(628.7EHL)
ER  -