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  1. Letcher, Robert Perkins [Other] ; United States Congress House Select Committee on Internal Improvements and Distribution of Surplus Revenue

    Navigation of the River Ohio. February 23, 1831. Read, and laid upon the table

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    Washington, DC, 1831 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2004

    Published in: United States congressional serial set ; serial set no. 210- House report / 21st Congress, 2nd session. House ; no. 97

  2. Letcher, Robert Perkins [Other] ; United States Congress House Select Committee on Internal Improvements and Distribution of Surplus Revenue

    Wheeling and Belmont Bridge Company. May 11, 1830

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    Washington, DC, 1830 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2004

    Published in: United States congressional serial set ; serial set no. 201- House report / 21st Congress, 1st session. House ; no. 399

  3. Forsyth, John [Other]; Letcher, Robert Perkins [Other] ; United States Congress House

    In the House of Representatives of the U.S. May 3, 1824. Printed by order of the House of Representatives

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    Washington, DC, 1824 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2003

    Published in: United States congressional serial set ; serial set no. 106

  4. Guise, Sylvain De; Shaw, Susan D.; Barclay, John S.; Brock, John; Brouwer, Abraham; Dewailly, Eric; Fair, Patricia A.; Fournier, Michel; Grandjean, Philippe; Guillette, Louis J.; Hahn, Mark E.; Koopman-Esseboom, Corine; Letcher, Robert J.; Matz, Angela; Norstrom, Ross J.; Perkins, Christopher R.; Schwacke, Lori; Skaare, Janneche Utne; Sowles, John; Aubin, David J. St.; Stegeman, John; Whaley, Janet E.

    Consensus Statement: Atlantic Coast Contaminants Workshop 2000

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    JSTOR, 2001

    Published in: Environmental Health Perspectives, 109 (2001) 12, Seite 1301

  5. De Guise, Sylvain; Shaw, Susan D.; Barclay, John S.; Brock, John; Brouwer, Abraham; Dewailly, Eric; Fair, Patricia A.; Fournier, Michel; Grandjean, Philippe; Guillette,, Louis J.; Hahn, Mark E.; Koopman-Esseboom, Corine; Letcher, Robert J.; Matz, Angela; Norstrom, Ross J.; Perkins, Christopher R.; Schwacke, Lori; Skaare, Janneche Utne; Sowles, John; St. Aubin, David J.; Stegeman, John; Whaley, Janet E.

    Consensus Statement: Atlantic Coast Contaminants Workshop 2000

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    National Institute of Environmental Health Sciences. National Institutes of Health. Department of Health, Education and Welfare, 2001

    Published in: Environmental Health Perspectives, 109 (2001) 12, Seite 1301-1302