TY  - BOOK
ED  - International geological Congress,(1960)
ED  - International geological Congress
TI  - The cretaceous-tertiary boundary: Report of the 21st session, Norden
U1  - 550.631 
PY  - 1960///
CY  - Copenhagen
PB  - Det Berlingske Bogtrykkeri
KW  - Geology
ER  -