Townsend, Wilfred Norman <br/><br/>
An Introduction to the scientific study of the soil 
W. N. Townsend 
 - 5th ed. 
 - New York  St. Martin's Press  1973 
 - vii, 209 p. : ill. ; 23 cm. 
<br/><br/> 1st ed. - 4th ed. by N. M. Comber 
<br/><br/>Bibliography: p. 199-206. 
<br/><br/><label>LCCN: </label>73-089990 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science