Environmental science 1 pupil's guide part 2

Bibliografische gegevens
Hoofdauteur:	Science Education Center, University of the Philippines
Formaat:	Boek
Taal:	English
Gepubliceerd in:	Quezon City Science Education Center, University of the Philippines 1972.
Onderwerpen:	Ecology > Problems, questions, exercises. Ecology > Study and teaching.