000			01045nam a22001937a 4500
005			20210414114124.0
008			120822t xxu||||| |||| 00| 0 eng d
020			_a198594828
050			_aS604.37.R87
100			_aRuthenberg, Hans.
245			_aFarming systems in the tropics. / _cHans Ruthenberg
250			_a3rd ed.
260			_aU.S.A. : _bClarendon Press, _c1980.
300			_axiv, 313 p. : _bill. (part col.) : _c24 cm.
500			_aIncludes index.
505			_aContents: Introduction -- Some characteristics of farming in a tropical environment -- Shifting cultivation systems -- Fallow systems -- Ley systems and diary systems -- Systems with permanent upland cultivation -- Systems with perenial crops -- Grazing systems --Systems with arable irrigation farming -- Systems with parenial crops -- Grazing systems -- Tendencies in the development of tropical farming systems -- Notes on methodology in cropping and farming system research.
650			_aAgricultural systems -- Tropics _x Farm management
942			_2lcc _cBK
999			_c2103 _d9603