1. Effects of groundwater flow on the distribution of biogenic gas in parts of the northern Great Plains of Canada and United States Author/Creator: Anna, Lawrence O., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2011 Resource Type: Book Access & Availability: Loading
2. Geologic framework of the ground-water system in Jurassic and Cretaceous rocks in the northern Great Plains, in parts of Montana, North Dakota, South Dakota, and Wyoming Author/Creator: Anna, Lawrence O., author Publication/Creation: Washington : Department of the Interior, U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading