TY  - BOOK
ED  - International Geological Congress (21st : 1960 : Copenhagen, Denmark)
ED  - Sorgenfrei, Theodor, 1915-
TI  - Report of the twenty-first session, Norden: Denmark, Finland, Iceland, Norway, Sweden
PY  - 1960///
CY  - Copenhagen
PB  - Berlingske Bogtrykkeri
KW  - Geology
KW  - Congresses
N1  - English, French, German, or Spanish
ER  -