Underwood, Eric J.  1905- <br/><br/>
Trace elements in human and animal nutrition / 
E. J. Underwood 
 - 3rd ed. 
 - London :  Academic Press,  1971 
 - xiv, 543 p. :  ill. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trace Elements<br/>Trace elements in nutrition<br/>Trace elements in animal nutrition