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You searched for: Creator Personal Names Schmidt, L. D. (Lawrence Delos), 1901- Remove constraint Creator Personal Names: Schmidt, L. D. (Lawrence Delos), 1901- All Creators Schmidt, L. D. (Lawrence Delos), 1901- Remove constraint All Creators: Schmidt, L. D. (Lawrence Delos), 1901- Subject Topical Coal-handling machinery. Remove constraint Subject Topical: Coal-handling machinery.

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