TY  - BOOK
AU  - Smith,Robert Leo
TI  - Elements of ecology and field biology
SN  - 0060463287
AV  - QH541 .S624
U1  - 577 23
PY  - 1977///
CY  - New York
PB  - Harper & Row
KW  - Ecology
KW  - Biology
KW  - Fieldwork
KW  - EcologÃ­a
KW  - BiologÃ­a
N1  - BibliografÃ­a: p. 459-488
ER  -