69 resultados para Buried plastic pipes

em University of Michigan


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From the Proceedings of the American Association for the Advancement of Science, v. 48, 1899.

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Bibliography: p. 6.

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National Highway Traffic Safety Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

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Includes index.

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At head of title: ... Department of commerce. Herbert Hoover, secretary. Bureau of mines. D.A. Lyon, acting director.

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Federal Highway Administration, Safety Design Division, McLean, Va.

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Mode of access: Internet.

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"These Studies deal with current activities in the department of Civil Engineering. They serve as progress reports of major investigations, and in general as a means for disseminating information not readily adaptable for presentation in formal technical papers or bulletins."