SPAN :    Shell public health and agricultural news. 

 - London :    Shell International Chemical,    1958- 
 - v. :    col. ill. ;    28 cm. 
 - Quarterly 
 - April, 1958 
 = SPAN 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Agriculture -- Periodicals.
<br/><br/><label>Dewey Class. No.: </label>PER 630.5 S7