Our changing earth

Our changing earth

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Xehetasun bibliografikoak
Egile nagusia: Canby, Thomas Y. (Egilea)
Formatua: Liburua
Hizkuntza:English
Argitaratua: Washington, D.C. National Geographic Society 1994
Gaiak:
Conservation on natural resources.
Man.
Environmental degradation.
Environmentalism.