Jacob, A.  <br/><br/>
Magnesium :  the fifth major plant nutrient / 
A. Jacob ; translated by Norman Walker. 
 - London :   Staples press,   c 1958. 
 - xii, 159 p. :  ill. ;  22 cm. 
<br/><br/>334  334 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physiology of plants--Nutrient.
<br/><br/><label>Dewey Class. No.: </label>581.13354 / J15m