The complete ecology fact book

The complete ecology fact book

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Manylion Llyfryddiaeth
Awduron Eraill: Nobile, Philip, Deedy, John
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: Garden City, NY Anchor Books c1972.
Pynciau:
Pollution.
Human ecology.
Man > Influence on nature.