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The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. Rabbitt, M.C. 1989. The United States Geological Survey: 1879-1989. Washington, DC: U.S. Government Printing Office, 52 pp. Robinson, G.R., Jr., and W.M. Brown. 2002. Sociocultural Dimensions of Supply and Demand for Natural Aggregate—Examples from the Mid-Atlantic Region, United States. Open File Report 02-350. Reston, VA: U.S. Geological Survey, 45 pp. Smith, S.D. 1996. Statistical Summary. In U.S. Geological Survey 1994 Minerals Yearbook. Reston, VA: U.S. Geological Survey, 33 pp. Available at http://minerals.usgs.gov/minerals/pubs/commodity/statistical_summary/871494.pdf. Smith, S.D. 1998. Statistical Summary. In U.S. Geological Survey 1996 Minerals Yearbook. Reston, VA: U.S. Geological Survey, 31 pp. Available at http://minerals.usgs.gov/minerals/pubs/commodity/statistical_summary/871496.pdf. Smith, S.D. 2000. Statistical Summary. In U.S. Geological Survey 1996 Minerals Yearbook. Reston, VA: U.S. Geological Survey, 33 pp. Available at http://minerals.usgs.gov/minerals/pubs/commodity/statistical_summary/871498.pdf. Smith, S.D. 2002. Statistical Summary. In U.S. Geological Survey 2000 Minerals Yearbook. Reston, VA: U.S. Geological Survey, 29 pp. Available at http://minerals.usgs.gov/minerals/pubs/commodity/statistical_summary/871400.pdf. Smith, S.D. 2003. Minerals Yearbook, Statistical Summary. Reston, VA: U.S. Geological Survey, 32 pp. Available at http://minerals.usgs.gov/minerals/pubs/commodity/statistical_summary/statmyb01.pdf. Smithsonian Institution. 2001. Smithsonian in Your Classroom: Lewis and Clark and the Language of Discovery. Washington, DC: Smithsonian Center for Education and Museum Studies. Available at http://educate.si.edu/lessons/Lewisandclark/pdf/l_and_c.pdf. Taggart, J.E., Jr. 2002. Analytical Methods for Chemical Analysis of Geologic and Other Materials. Open File Report 02-223. Denver, CO: U.S. Geological Survey, 20 pp. Tooker, E.W. 1991. Copper and molybdenum deposits in the United States. Pp. 23-44 in H.J. Gluskoter, D.D. Rice, and R.B. Taylor, eds., Economic Geology, U.S.: The Geology of North America, vol. P-2. Boulder, CO: Geological Society of America. U.S. Bureau of Mines. 1993. Minerals Yearbook 1991: vol. I, Metals and Minerals. Washington, DC: U.S. Department of the Interior, p. iii. U.S. Geological Survey. 1995. The National Mineral Resource Surveys Program: A Plan for Mineral-Resource and Mineral-Environmental Research for National Land-Use, Environmental, and Mineral-Supply Decision Making. Reston, VA: U.S. Geological Survey, 45 pp. U.S. Geological Survey. 1996. Strategic Plan for the U.S. Geological Survey—1997-2005. Reston, VA: U.S. Geological Survey, 43 pp. U.S. Geological Survey. 1998a. Geology for a Changing World: A Science Strategy for the Geologic Division of the U.S. Geological Survey, 2000-2010. Circular 1172. Reston, VA: U.S. Geological Survey. Available at http://pubs.usgs.gov/circ/c1172/index.html. U.S. Geological Survey. 1998b. USGS Mineral Resources Program: A National Perspective. Fact Sheet 008-98, January. Reston, VA: U.S. Geological Survey, 4 pp. U.S. Geological Survey. 1999a. USGS: Science for a Changing World. U.S. Geological Survey Refocused Strategic Plan 1997-2005. Reston, VA: U.S. Geological Survey, 43 pp. U.S. Geological Survey. 1999b. Natural Aggregates—Foundation of America’s Future. Fact Sheet 144-97. Reston, VA: U.S. Geological Survey, 4 pp.
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