Charles W. Schalk

2 books

Groundwater Technical Procedures of the U.S. Geological Survey by Charles W. Schalk, William L. Cunningham

Groundwater Technical Procedures of the U.S. Geological Survey

Charles W. Schalk, William L. Cunningham

158 pages • paperback

nonfiction art technology medium-paced
Relations Among Water Levels, Specific Conductance, and Depths of Bedrock Fractures in Four Road-Salt-Contaminated Wells in Maine, 2007-9 by Charles W. Schalk, Nicholas W. Stasulis

Relations Among Water Levels, Specific Conductance, and Depths of Bedrock Fractures in Four Road-Salt-Contaminated Wells in Maine, 2007-9

Charles W. Schalk, Nicholas W. Stasulis

62 pages • paperback

nonfiction science medium-paced