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1
Legibility of alphanumeric characters and other symbols
Washington : U.S. Dept. of Commerce, National Bureau of Standards; for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1964Format: Government Document Book
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2
Legibility of Alphanumeric Characters and Other Symbols, II : 2, Reference Handbook
Washington : U.S. Dept. of Commerce, National Bureau of Standards, 1967Format: Government Document Book
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3
Legibility of alphanumeric characters and other symbols : Permuted title index and bibliography
Washington,; Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 1964Format: Government Document Book
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