Hydrometry = Hydrometrie :  proceedings of the Koblenz Symposium, September 1970 = Actes du colloque de Coblence, Septembre 1970. 

 - Rome :  UNESCO,  1973. 
 - 2 vols. 
 - Studies and reports in hydrology series .
<br/><br/><label>ISBN: </label>9230010510 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrological instruments--Congresses.<br/>Hydrological stations--Congresses.<br/>Radiosotopes in hydrology--Congresses.