TY  - BOOK
AU  - Keeton,William T.
AU  - Gould,James L.
TI  - Biological science
SN  - 0393962237
U1  - 570 19
PY  - 1993///
CY  - New York
PB  - W.W. Norton and Company
KW  - Biology
KW  - Spines
N1  - ls
N2  - Environment Management
ER  -