992 resultados para Tiber Creek Estuary (Washington, D.C.)--Maps, Manuscript.
Resumo:
"1 September 1978."
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"22 July 1960"--Change no. 2.
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"May 1960."
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"May 1970."
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Includes index.
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"FS ; 639"
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"PHC-1-49."
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"PHC-2-49."
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Maps on lining papers.
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Includes index.
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"September 1980."
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A study of soil erosion on the Honey Hollow creek watershed, Bucks County, Pennsylvania.
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A study of soil erosion on the Honey Hollow creek watershed, Bucks County, Pennsylvania.
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Investigation conducted by the Pacific Northwest forest and range experiment station. cf. p. ii.
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Includes index.