Eighth Congress on Irrigation & Drainage-Varna (1972)  Transactions 

 - International Commission on Irrigation and Drainage   New Delhi  1972 
 - 28.2.479p.  ILL.,Cht.,Fig and Table 
 - Volume  IV .
<br/><br/><label>Nat. Bib. No.: </label>3401 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Universal Decimal Class. No.: </label>626.81  / EIG