Principles of soil science / 
3G E-Learning. 
 - New York :  3G E-Learning LLC,   c2020. 
 - xvi, 393 pages :  color illustrations + CD-ROM 
<br/><br/> Includes bibliographical references and index.  
<br/><br/><label>ISBN: </label>9781984638601 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science<br/>Soils
<br/><br/><label>Dewey Class. No.: </label>631.4  / T531 2020