Sell it by mail : making your product the one they buy / James Lumley. - N.Y. [et al.] : Wiley, [1986]. - xviii, 382 p. : ill. ; 23 cm.см.. - ISBN 0-471-87908-8[MFN: 13521]
UDC: 339.138 + 339.187 + 338.22
E 72.523/3 = 339.138/L-96 - Civil Education Reading Hall