TY  - BOOK
AU  - Krebs, Charles J.
TI  - Ecology
SN  - 978-0-321-50743-3.
AV  - QH541.K67 
CY  - San Francisco
KW  -  Biogeography
KW  -  Biotic communities
KW  -  Environmental sciences
KW  -  Population biology
KW  - Biology
KW  - Ecology
ER  -