000			00337nam a2200133Ia 4500
005			20260224040900.0
008			260224s9999||||xx |||||||||||||| ||und||
082			_a630.091 RUT
100			_aRuthenberg, H.
245		0	_aFarming systems in the tropics
260			_aEngland: Oxford Clarendon Press, _c1971
300			_a424
942			_cBK
999			_c2055 _d2055