Water management at its best / 
13th Conference of Water and Land Supervisor was held on 1971 at Santa Fe 
 - Washington, D.C. :  U.S. Government Printing Office,  1972 
 - 81 p. ;  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality managementes--United States<br/>Sewage--Purification--United States
<br/><br/><label>Dewey Class. No.: </label>628.1680973