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1অনুযায়ী Davis, William D.“...U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; National Technical Information Service, distributor,...”
প্রকাশিত 1996
গ্রন্থ -
2অনুযায়ী Jones, Walter W.“...U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; [Springfield, Va. : National Technical Information Service, distributor,...”
প্রকাশিত 1996
গ্রন্থ