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The primary purpose of this study is the investigation of the possibilities of prevention of precipitation of the calcium carbonate in the swimming pools. A secondary purpose is a study of the effect on the hydrogen sulphide by the method developed for the prevention of precipitation of calcium carbonates.

Report of Congressional Printing Investigation Commission Created by the Act Approved March 3, 1905, Making Appropriations to Supply Deficiencies, Etc: Appendix and Preliminary report: Letter of inquiry to executive departments; Replies of departments; Surplus copies of departmental editions of government publications; Preliminary report of Printing investigation commission (59th Cong., 1st sess. Senate rpt. 2153); Regulations of Joint committee on printing; Index

United States. Printing Investigation Commission

Published: 1906

Total Pages: 802


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