Teaching materials on natural resources with focus on the Philippines

Détails bibliographiques
Auteur principal:	Rivera, Nenita Castillo 1948-
Format:	Thèse
Langue:	English
Publié:	1983.
Sujets:	Natural resources > Study and teaching (Secondary) > Philippines. Social sciences > Study and teaching (Secondary) > Philippines. Teaching > Philippines > Aids and devices.