TY  - BOOK
AU  - Udvardy, Miklos D. F.
TI  - A biogeographical classification system for terrestreal environments
KW  - Biogeografía
KW  - Ecosistema
N1  - Sobreteiro de: McNeily, J.A. National Parks, conservation and development.- Washington: Smithsonian Institution (1982): pp. 34-48
ER  -