01045nam a22001937a 4500 20210414114124.0 120822t xxu||||| |||| 00| 0 eng d 198594828 S604.37.R87 Ruthenberg, Hans. Farming systems in the tropics. / Hans Ruthenberg 3rd ed. U.S.A. : Clarendon Press, 1980. xiv, 313 p. : ill. (part col.) : 24 cm. Includes index. Contents: 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. Agricultural systems -- Tropics Farm management lcc BK 2103 9603 0 0 lcc 0 0 WIUC-1 WIUC-1 GEN 2012-08-22 0 S604.37.R87 5921/12 2012-08-22 00:00:00 1 2012-08-22 BK