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You searched for: Author Shaffer, Nelson R. Remove constraint Author: Shaffer, Nelson R. Place Indiana, United States Remove constraint Place: Indiana, United States Year 1998 Remove constraint Year: 1998
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1. Map of Indiana showing locations of coal and industrial minerals operations

1998. Shaffer, Nelson R. Includes pie graph and list of further reading. '1984 (Modified 1997).' Scale 1:500,000 By Nelson R. Shaffer.