TY  - BOOK
AU  - Polunin, Nicholas Vladimir.
TI  - Ecosystem theory and application
T2  - Environmental monographs and symposia
U1  - 574.5 
PY  - 1986///
CY  - Chichester, England
PB  - Wiley
KW  - Ecología
KW  - Ecosistema
N1  - 59-138
ER  -