Fourth Congress on Irrigation And Drainage Madrid- 1960 

 - International Commission on Irrigation and Drainage 
 - 466p.  ILL.,Cht.,Fig and Table 
 - Question  12 .
<br/><br/><label>Nat. Bib. No.: </label>769 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Universal Decimal Class. No.: </label>626.81/.86:0613  / FOR