Studies in the Trondheim region, central Norwegian Caledonides. The nature of the basement contact, by Christoffer Oftedahl. Reconnaissance of the Tømmerås anticline, by Janet Springer Peacey. Stratigrapical [sic] position of the Gudå conglomerate zone, by Fredrik Chr. Wolff. (Norges geologiske undersøkelse. [Skrifter] ; nr. 227)
Studies in the Trondheim region, central Norwegian Caledonides. The nature of the basement contact, by Christoffer Oftedahl. Reconnaissance of the Tømmerås anticline, by Janet Springer Peacey. Stratigrapical [sic] position of the Gudå conglomerate zone, by Fredrik Chr. Wolff.
(Norges geologiske undersøkelse. [Skrifter] ; nr. 227)