TY  - BOOK
AU  - Curtis,Helena
TI  - Biology
SN  - 087901394X
U1  - 570 21
PY  - 1989///
CY  - New York, N.Y.
PB  - W. H. Freeman ; Worth Publishers
KW  - Biology
KW  - Life sciences
KW  - Evolution (Biology)
N1  - Includes bibliographies and index
ER  -