TY  - BOOK
AU  - Sahama,ThG
TI  - Mineralogy and Petrology of Lava Flow from Mt. Nyiradgongo, Belgian Congo
T2  - Annales Academiae Scientiarum Fennicae. Serie A. III. Geologica-Geographica ; 
PY  - 1953///
CY  - Helsinki : 
PB  - Suomalainen Tiedeakatemia, 
N1  - Contiene además: Parallel growth of nepheline and microperthitic kalsite from North Kivu, Balgian Congo
ER  -