Aetna Portland Cement Co. In circuit court of appeals for 7th circuit, Aetna Portland Cement Company et al., no. 8360; Cement Institute et al, no. 8361; Marquette Cement Manufacturing Company, no. 8371; Calaveras Cement Company et al., no. 8372; Huron Portland Cement Company, No. 8373; Superior Portland Cement. Inc., no. 8386; Northwestern Portland Cement Company, no. 8389; Riverside Cement Company, no. 8393, Universal Atlas Cement Company, no. 8399; California Portland Cement Company, no. 8402; Monolith Portland Cement Company et al., no. 8409; Blaine S. Smith et al., no. 8410, v. Federal Trade Commission; brief for respondent.

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