TY  - BOOK
AU  - Horan,N.J.
TI  - Biological wastewater treatment systems: theory and operation 
SN  - 0471922587 :
AV  - TD755 .H66 1990
U1  - 628.35 HOR 20
PY  - 1990///
CY  - Chichester, New York
PB  - Wiley
KW  - Sewage
KW  - Purification
KW  - Biological treatment
N1  - P.B; Includes bibliographical references
UR  - http://www.loc.gov/catdir/toc/onix03/89016629.html
UR  - http://www.loc.gov/catdir/enhancements/fy0706/89016629-d.html
ER  -