TY  - BOOK
AU  - Alexander, Gordon,
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 2
PY  - 1956///46
CY  - New York
PB  - Crowell
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Biology
N1  - 5
ER  -