The Philippine environment 1980 fourth annual report.

Bibliográfalaš dieđut
Searvvušdahkki:	Philippines. National Environmental Protection Council (Dahkki)
Materiálatiipa:	Girji
Giella:	eaŋgalasgiella
Almmustuhtton:	Manila National Environmental Protection Council, Ministry of Human Settlements [1982]
Fáttát:	Environmental protection > Philippines > Periodicals. Pollution > Philippines > Periodicals. Environmental policy > Philippines > Periodicals.