TY  - BOOK
AU  - Raven, Peter H.
AU  - Johnson, George B.
TI  - Understanding biology
SN  - 0801625246
AV  - QH 308.2 .R38 1991 
PY  - 1991///
CY  - St. Louis
PB  - Mosby Year Book
KW  - Biology
N1  - Includes appendix and index
ER  -