31. Map showing total thickness of the Judith River Formation, Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
32. Map showing total thickness of the Lakota Formation and equivalent rocks, Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
33. Map showing total thickness of the Swift Formation, Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
34. Mean annual runoff and peak flow estimates based on channel geometry of streams in northeastern and western Montana Author/Creator: Parrett, Charles, author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1983 Resource Type: Book Access & Availability: Loading
35. A method for estimating mean and low flows of streams in national forests of Montana Author/Creator: Parrett, Charles, author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading
36. Methods for estimating flood frequency in Montana based on data through water year 1998 Author/Creator: Parrett, Charles Publication/Creation: Denver, CO : U.S. Geological Survey, Information Services [distributor]. Resource Type: Book Access & Availability: Loading
37. Pesticides in soils and ground water in selected irrigated agricultural areas near Havre, Ronan, and Huntley, Montana Author/Creator: Clark, David W. 1951- (David Wayne), author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
38. Plan of study for the Regional Aquifer-System Analysis of the northern Rocky Mountains Intermontane Basins, Montana and Idaho Author/Creator: Clark, David W. 1951- (David Wayne), author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading
39. Potential effects of surface coal mining on the hydrology of the Greenleaf-Miller area, Ashland coal field, southeastern Montana Author/Creator: Levings, Gary W., author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1983 Resource Type: Book Access & Availability: Loading
40. Potential effects of surface coal mining on the hydrology of the Little Bear Creek area, Moorhead coal field, southeastern Montana Author/Creator: McClymonds, N. E., author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading