00253nam a2200097Ia 450000500170000000800410001705000170005810000170007524500360009226000270012820251229192435.0251229s9999    xx            000 0 und d  aSB 185 .A31   aAcland, J.D. 0aEast African crops.cJ.D Acland  aLondonb Longmanc1977