00380nam a2200157Ia 4500008004100000020001800041035000900059082001500068100001800083245005500101250000600156260003600162300000800198500001000206650000600216210723s9999||||xx |||||||||||||| ||und||  a0 19 859459 3  a8094  a338.1BUPT  aUpton, Martin 0aAgricultural Production Economics & Resource - Use  a-  aOxfordbOxford University Press  a357  a18305  a-