Our natural resources and their conservation /
Harry B. Kircher, Donald L. Wallace, Dorothy J. Gore.
APA Citation
Kircher, H. B., Gore, D. J., Wallace, D. L. (1988). Our natural resources and their conservation. 6th ed. Danville, Ill.: Interstate Printers & Publishers.
MLA Citation
Kircher, Harry B, Dorothy J Gore, and Donald L Wallace. Our Natural Resources And Their Conservation. 6th ed. Danville, Ill.: Interstate Printers & Publishers, 1988.
Warning: These citations may not always be complete (especially for serials).