Duncan, Delbert J. Retailing: principles and methods / Delbert J. Duncan and Charles F. Phillips - 6th ed. - Homewood : Ill., R.D. Irwin, 1963. - xv, 785 p. : ill. ; 22 cm. Index present. Subjects--Topical Terms: Retail trade.Management. Dewey Class. No.: 658.87 / DUR 1963