Yeomans,  P.A. <br/><br/>
The challenge of landscape:  the development and practiceof keyline/ 
P.A. Yeomans 
 - Sydney:  Keyline Publishing,  1958 
 - 271p.:  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil conservation--Australia<br/>Soil fertility--Australia