Shadows over the land

Discusses the causes of different kinds of pollution, the ways in which they endanger the environment, and some of the solutions to the pollution and conservation crisis.

Chi tiết về thư mục

Tác giả chính:	McCoy, J. J. (Joseph J.) 1917-
Định dạng:	Sách
Ngôn ngữ:	English
Được phát hành:	New York Seabury Press [1970]
Những chủ đề:	Conservation of natural resources > Juvenile literature. Pollution > Juvenile literature. Conservation of natural resources. Pollution.