Standards and specifications for nonmetallic minerals and their products
著者
書誌事項
Standards and specifications for nonmetallic minerals and their products
（Miscellaneous publications, no. 110）
U.S. Govt. Print. Off., 1930
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注記
"Prepared by John Q. Cannon, Jr., under the direction of A.S. McAllister, chief of the division of specifications"
At head of title: U.S. Department of Commerce, National Bureau of Standards