Shirlaw, D.W.G.  <br/><br/>
Soil fertility and field methods of analysis: a guide for agricultural students and advisers,gardeners and horticulturalists  (Book) 

 - London  Cassell  1962 
 - 29 p.  22 cm. 
<br/><br/><label>Universal Decimal Class. No.: </label>631.42:631.452 SHI  / 5815