National parks and protected areas :
National parks and protected areas : their rolo in environmental protection /
edited by Gerald Wright ; consulting editor : John Lemons.
- Cambridge, Mass. : Blackwell Science, 1996.
- xvi, 470 p. ; 26 cm.
Incluye bibliografia.
0-86542-496-9
SB482 / .A4 N38
Incluye bibliografia.
0-86542-496-9
SB482 / .A4 N38