00294nam a2200097Ia 450000500170000000800410001705000170005810000210007524500770009626000230017320251229182715.0251229s9999    xx            000 0 und d  aSB 185 .T7L5  aLitzenberger C.S 0aGuide for field crops in the tropical and the  sutropicscS Litzenberger  aLondon Oxford 1976