Fristrup., Børge. “Geological Map of the Arctic. Prepared by the First International Symposium on Arctic Geology 1960. Sponsored by The Alberta Society of Petroleum Geologists, Calgary. 40‘ X 45’. $ 4,50”. Geografisk Tidsskrift, bd. 61, januar 1962, https://tidsskrift.dk/geografisktidsskrift/article/view/46728.