958 resultados para Perkins, Ephraim.
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Mode of access: Internet.
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Title page typewritten.
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"By Nelson S. Perkins, construction engineer, Peter Landsem, assistant construction engineer, National Committee on Wood Utilization, United States Department of Commerce, and Geo. W. Trayer, senior engineer, Forest Products Laboratory, Branch of Research, Forest Service, United States Department of Agriculture."--P.1.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.