TY  - BOOK
AU  - Keeton, William T.
TI  - Biological science.
SN  - 0393950212
AV  - QH 308.2 .K44 1980 
PY  - 1980///
CY  - New York
PB  - W. W. Norton & Company
KW  - Biology
N1  - Includes bibliographies and index
ER  -