Nature study for conservation ; a handbook for environmental education.

Detaylı Bibliyografya
Yazar:	Brainerd, John W. 1918
Materyal Türü:	Kitap
Dil:	English
Baskı/Yayın Bilgisi:	New York Macmillan c1971.
Konular:	Conservation of natural resources. Study and teaching.