Canby, Thomas Y. , author ,
Our changing Earth / by Thomas Y. Canby ; prepared by the Book Division, National Geographic Society. --
Includes index.
A planet under pressure The evolving environment The air we breathe The face of the earth A world of water The web of diversity Keys to the future
ISBN 0870449109
Environmentalism
Environmental degradation -- Citizen participation
Nature -- Effect of human beings on
363.7
Our changing Earth / by Thomas Y. Canby ; prepared by the Book Division, National Geographic Society. --
Includes index.
A planet under pressure The evolving environment The air we breathe The face of the earth A world of water The web of diversity Keys to the future
ISBN 0870449109
Environmentalism
Environmental degradation -- Citizen participation
Nature -- Effect of human beings on
363.7