Jenny,hans <br/><br/>
Factors of soil formation  a system of quantitative pedology 

 -  1941 
<br/><br/> Ag mean  Agriculture Page 512-519 in A-Z Register (Acc. No. Ag1-Ag229) & Page 564-572 (Acc. No. Ag230-Ag469) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English Literature
<br/><br/><label>Dewey Class. No.: </label>Ag460