00876cam a2200277 a 4500 3729 3729 005000 OSt 20210919161423.0 810727s1981 ilua 001 0 eng 81080104 0256025762 (pbk.) available (DLC) 81080104 DLC DLC DLC eng. HF5415 .R9 658.8 19 Ryan, William T. A Guide to Marketing / William T. Ryan. Homewood, Ill. : Learning Systems Co., c1981. x, 326 p. : ill. ; 21 cm. Irwin publications for professional development "An adaptation of material previously published in a programmed learning aid (PLAID) entitled Principles of marketing. Includes index. Marketing. Marketing. lcc BOOK 0 0 lcc 0 0 001 001 2014-10-22 005000 0 HF5415 .R9 1972 005000 2014-10-22 00:00:00 1 2014-10-22 BOOK