00924nam a2200265 a 4500001001300000005001500013007000300028008004100031049001700072052001700089082001500106100004800121245010200169260005800271300003100329502008900360504002900449650002800478650002400506650002800530650003400558650002800592900002700620950001100647WDM20110054820201112144414ta110406s2009    us a     m    000   eng  0 lWM657362fDP02a338.17bJ33p01a338.172211 a장종익,g張宗翼,d1963-0KAC20142312910aProduct differentiation and the role of contracts :bthe US pork industry case /dby Jongick Jang  aAnn Arbor, Mich. :bUMI Dissertation Services,cc2009  ax, 216 p. :bill. ;c23 cm1 aThesis (Ph.D.) --bUniversity of Missouri - Columbia,cAgricultural Economics,d2008  aBibliography: p. 201-215 0aProduct differentiation 0aCommodity exchanges 0aContracts, Agricultural 0aAgriculturexEconomic aspects 4aEconomics, Agricultural10aJang, Jong-ick,d1963-0 bUS$108