Houck, James P . Elements of agricultural trade policies / by James P. Houck. - New York : Macmillan Publishing , 1986. - xi, 191p. : figs. ; 24cm . Includes index ISBN: 0029477204 USD 34.95 Subjects--Index Terms: PRODUCE TRADE-GOVERNMENT Dewey Class. No.: 382.41 / HOU/E