Arsenic data for streams in the upper Missouri River Basin, Montana and Wyoming
By: by J.R. Knapton and A.A. Horpestad ; prepared in cooperation with the Montana Department of Health and Environmental Sciences
Contributors: Horpestad, Abraham A; Montana. Dept. of Health and Environmental Sciences; Geological Survey (U.S.)
Series: Open-file report -- 87-124; U.S. Geological Survey open-file report -- 87-124
Publisher: Dept. of the Interior, U.S. Geological Survey
Published: 1987
Place of publication: Helena, Mont
Language: eng
Format: Microform
Subjects: Arsenic; Water -- Pollution -- Missouri River Watershed
Notes: "March 1987."

Distributed to depository libraries in microfiche

Bibliography: p. 8

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1987]. 1 microfiche ; 11 x 15 cm