Allen, John Barry <br/><br/>
Nepheline-syenite and phonolite / 
[by] J. B. Allen and T. J. Charsley. 
 - London:   Her Majesty's Stationery Office,   1968.  
 - vi, 169 p. :  tables, maps ;  25 cm. 
 - Natural Environment Research Council : Institute of Geological Sciences   : Mineral Resources Division .
<br/><br/>Includes bibliographical references (p. 142-160) and index (p. 161-169). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nepheline syenite<br/>Phonolite
<br/><br/><label>Dewey Class. No.: </label>553.52