Profit sharing patterns : a comparative analysis of the formulas and results of the plans of 300 companies with 730,000 employees. Knowlton, P. A. Profit-sharing United States Comparative studies. 658.32 19 KNP Evanston, Ill. : Profit Sharing Research Foundation, 1954. 1954. 1954 Text viii, 144 p. : eng United States