TY  - BOOK
AU  - Kelly,Mahlon G.
AU  - McGrath,John C.
TI  - Biology: evolution and adaptation to the environment 
U1  - 574.5 
PY  - 1975///
CY  - Boston
PB  - Houghton Mifflin
KW  - Biology
KW  - Evolution (Biology)
KW  - Adaptation (Biology)
KW  - Ecology
N1  - Includes bibliographical references and index
ER  -