TY  - BOOK
AU  - Gray 
TI  - Biology of wastewater treatment 
T2  - Series On Environmental Science and Management
SN  - 1860943284 
U1  - 628.351 GRA 2004 
PY  - 2004///
CY  - Covent Garden
PB  - Imperial College Press
KW  - Biotechnology
KW  - Sewage disposal
KW  - Sewage
KW  - Purification
KW  - Biological treatment
N1  - Includes index p.1395 - 1421
ER  -