00439nam a2200157Ia 4500008004100000020001500041082001900056100001800075245007700093260003200170300000800202650001400210650002000224653001600244653002100260170901s1994    xx            000 0 und d  a0851987680  a338.1068bR12A  aRae, Allan N. 0aAgricultural Management EconomicsbActivity Analysis and Decision Making  aUKbCAB Internationalc1994  a358  aEconomics  aSocial sciences  aAgriculture  aEconomic aspects