Mercury in the environment--
surficial materials of the conterminous United States,
by Hansford T. Shacklette, Josephine G. Boerngen, and Robert L. Turner.
APA Citation
Shacklette, H. T., Turner, R. L., Boerngen, J. G. (1971). Mercury in the environment--: surficial materials of the conterminous United States. Washington: [U.S. Geological Survey].
MLA Citation
Shacklette, Hansford T, Robert L Turner, and Josephine G Boerngen. Mercury In the Environment--: Surficial Materials of the Conterminous United States. Washington: [U.S. Geological Survey], 1971.
Warning: These citations may not always be complete (especially for serials).