TY  - BOOK
AU  - Lebas Michael John
TI  - Carbonatite-Nephelinite volcanism: an african case history
U1  - H211, L7-;1 
PY  - 1977///
CY  - London
PB  - John Wiley        
KW  -  Volcanic rock
KW  - Geology
N1  - Appendix I-II, 294-317p
ER  -