TY  - BOOK
AU  - Salop L J `
TI  - Precambrian of the Northern Hemsphere general features of early geological evolution
T2  - Developments in palaeontology and stratigraphy; 3
U1  - H51v1927, L7 
PY  - 1977///
CY  - Amsterdam
PB  - Elsevier         
KW  -  Precambrian
KW  -  Stratigraphy
KW  - Geology
ER  -