TY  - BOOK
AU  - Allen,John Barry
AU  - Charsley,Timothy John
ED  - Her Majesty΄s Stationery Office
TI  - Nepheline-syenite and phonolite
T2  - Natural Environment Research Council : Institute of Geological Sciences
U1  - 553.52 
PY  - 1968///.
CY  - London: 
PB  - Her Majesty's Stationery Office, 
KW  - Nepheline syenite
KW  - Phonolite
N1  - Includes bibliographical references (p. 142-160) and index (p. 161-169)
ER  -