TY  - BOOK
AU  - Emlen,John Merritt
TI  - Ecology: an evolutionary approach
SN  - 0201018942 (hbk. )
AV  - QH541 EML 
PY  - 1973///
CY  - Reading, Mass.
PB  - Addison-Wesley Pub. Co.
KW  - Ecology
N1  - Includes index; Includes bibliographies
ER  -