Ruthenberg, Hans. <br/><br/>
Farming systems in the tropics. / 
Hans Ruthenberg 
 - 3rd ed. 
 - U.S.A. :  Clarendon Press,  1980. 
 - xiv, 313 p. :  ill. (part col.) :  24 cm. 
<br/><br/> Includes index. 
<br/><br/>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.  
<br/><br/><label>ISBN: </label>198594828 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems -- Tropics -- Farm management   
<br/><br/><label>LC Class. No.: </label>S604.37.R87