TY  - BOOK
AU  - Clements, Frederick E.
AU  - Shelford, Victor E.
TI  - Bio-ecology
U1  - 577.5 21st ed.
PY  - 1952///
CY  - New York: 
PB  - John Wiley, 
KW  - Plant ecology
KW  - Animal ecology
KW  - Ecology
KW  - Bio-ecology
N1  - 359-425 includes index
ER  -