The Zambales Negritos swidden agriculture and environmental change by Brosius, J. Peter

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A fishing village revisited follow-up of a case study by Hernandez, Dolores Fuentes 194-

Guidebook to grassland plants a resource material for biology teachers.

The new human order by Marcos, Imelda Romualdez 1929-

The environmental crisis by Abadilla, Domingo C.

The environmental crisis by Abadilla, Domingo C., 1920-

survival catalog, 2

Survival catalog 2

The concept of health and environment in rural communities two case studies by Hernandez, Dolores F.

Survival catalog.