TY  - BOOK
AU  - Pepper, Ian L.
AU  -  Gerba, Charles P.
TI  - Environmental microbiology 
SN  - 0-12-550656-2
AV  - QR100.P46 
CY  - Amsterdam
KW  -  Bacteria--Ecology
KW  - Microbial ecology
KW  - Microbiology
ER  -