Article Tinkler, K.J. (1983)
John Playfair on a glacial erratic in the Isle of Arran. Scottish Journal of Geology (pp. 129-134). (/p/isis/citation/CBB000029836/) unapi

Article Hamlin, Christopher (1982)
James Geikie, James Croll, and the eventful Ice Age. Annals of Science: The History of Science and Technology (pp. 565-583). (/p/isis/citation/CBB000018493/) unapi

Book Zumbühl, Heinz J. (1980)
Die Schwankungen der Grindelwaldgletscher in den historischen Bild- und Schriftquellen des 12. bis 19. Jahrhunderts: Ein Beitrag zur Gletschergeschichte und Erforschung des Alpenraumes. (/p/isis/citation/CBB000017034/) unapi

Article Portmann, Jean-Pierre (1980)
Notice historique sur les roches moutonnées, polies et striées. Gesnerus (pp. 142-144). (/p/isis/citation/CBB000003871/) unapi

Article Campbell, Ian; Hutchison, David (1978)
A question of priorities: Forbes, Agassiz, and their disputes on glacier observations. Isis: International Review Devoted to the History of Science and Its Cultural Influences (pp. 388-399). (/p/isis/citation/CBB000015340/) unapi

Book 100 Jahre Glazialtheorie im Gebiet der skandinavischen Vereisungen (1978). (/p/isis/citation/CBB000027508/) unapi

Book Frängsmyr, Tore (1976)
Upptäckten av istiden: Studier i den moderna geologins framväxt. (The discovery of the ice age.). (/p/isis/citation/CBB000014352/) unapi

Book Bleuer, N. K. (Indiana: 1975)
The Stone-Creek section: A historical key to the glacial stratigraphy of West-Central Indiana. (/p/isis/citation/CBB000012595/) unapi

Article Gellert, Johannes F. (1975)
100 Jahre Glazialtheorie und das quartäre Erdbild von heute. Petermanns Georgraphische Mitteilungen (pp. 241-252). (/p/isis/citation/CBB000024365/) unapi

Article Oldroyd, D. R. (1973)
[Julius] Haast's glacial theories and the opinions of his European contemporaries. Journal of the Royal Society of New Zealand (pp. 5-14). (/p/isis/citation/CBB000015372/) unapi