Jacob, A.,   Dr.,  <br/><br/>
Magnesia :  der funfte pflanzenhauptnahrstoff / 
Prof. Dr. A. Jacob 
 - [Place of publication not identified] :  Ferdinand Enke Verlag Stuttgart,  1955 
 - xi, 110 pages :  illustrations ;  24 cm 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnesium --Soil chemistry<br/>Soil science --Magnesium
<br/><br/><label>LC Class. No.: </label>S592.6.M3 J33