Plants, people, and environmental quality;
a study of plants and their environmental functions.
Text and photography by Gary O. Robinette.

APA Citation

Robinette, G. O. (1972). Plants, people, and environmental quality: a study of plants and their environmental functions. Washington: U.S. Dept. of the Interior, National Park Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].

MLA Citation

Robinette, Gary O. Plants, People, And Environmental Quality: a Study of Plants And Their Environmental Functions. Washington: U.S. Dept. of the Interior, National Park Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1972.