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Publication Extents

Not all publications have extents, not all extents are completely accurate
Map showing mined areas of the Boulder-Weld coal field, Colorado
Roger B. Colton, R.L. Lowrie
1973, Miscellaneous Field Studies Map 513
Compiled by Raymond E. Lowrie, U.S. Bureau of Mines (1966), and revised by Roger B. Colton, U.S. Geological Survey, assisted by Harold R. Fitch, 1972.In the revision of this map, many mine maps and two unpublished general small-scale maps of the area by F. H. Canis (deceased) and Samuel Tescher...
Water resources data for Michigan, water years 1972-73; Part 2, Water quality records
Water Resources Division, U.S. Geological Survey
1973, Water Data Report MI-72-73-2
Water resources data for the 1972 and 1973 water years for Michigan include records of data for the chemical and physical characteristics of surface and ground waters. Data on the quality of surface water (chemical, temperature, and sediment) were collected from designated sampling sites at predetermined intervals such as once-daily,...
Mars maps
Water Resources Division, U.S. Geological Survey
1973, Open-File Report 73-346