Morgan, R. P. C. (ed.) <br/><br/>
Soil conservation: problems and prospects; Proceedings of Conservation 80, the International Conference on Soil Conservation, Silsoe, Bedford, UK, 21-25 July, 1980 

 - Chichester (UK):   John Wiley,   1981.  
 - 576 p. 
<br/><br/> Includes bibliographies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservação do solo<br/>Erosão<br/>Controle de erosão