Leopold, Luna B.  1915-2006. <br/><br/>
Conservation networks, 
by Luna B. Leopold. 
 - Washington,  1962- 
 - v.  illus.  27 cm. 
<br/><br/>pt.A. The man and the hill.--pt.B. A national network of hydrologic bench marks. 
<br/><br/><label>LCCN: </label>gs 62000242  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology--Research.<br/>Nature--Effect of human beings on.<br/>Water conservation.
<br/><br/><label>LC Class. No.: </label>QE75  / .C5 no. 460 A, etc.