-
371
-
372
-
373
Population pressure and natural resource management key issues and possible actions.
Argitaratua 1991Liburua -
374
-
375
-
376
A review of Philippine natural resource and environmental management, 1986-1988
Argitaratua 1990Liburua -
377
-
378
State of the world, 2000 a Worldwatch Institute report on progress toward a sustainable society
Argitaratua 1990Liburua -
379
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380


