Plants, people and environment

Manylion Llyfryddiaeth
Awduron Eraill:	Kaufman, Peter B., LaCroix, J. Donald
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	New York Macmillan c1979.
Pynciau:	Botany. Human ecology. Ecology. Conservation of natural resources. Environmental protection.