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1
by Wegstein, J. H.
Washington : U.S. National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975
Washington : U.S. National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975
Government Document
Book
2
by Wegstein, J. H.
Washington : U. S. National Bureau of Standards : for sale by the Supt. of Docs., U. S. Govt. Print. Off., 1972
Washington : U. S. National Bureau of Standards : for sale by the Supt. of Docs., U. S. Govt. Print. Off., 1972
Book