TY  - BOOK
AU  - x, x
AU  - x
TI  - Biological science and ecological approach: x
SN  - x
U1  - 574.5/BIO(3) 
PY  - 1973///
CY  - Chicago
PB  - Rand McNally
KW  - Biology
KW  - Ecology
N1  - x
ER  -