Tagskifere, heller og vekstene.
By: Af Amund Helland.
Series: Norges geologiske undersøgelse.; no. 10
Publisher: I commission hos H. Aschehoug & co.
Published: 1893
Place of publication: Kristiania
Language: nor
Number of pages: 178
Subjects: Slate; Quarries and quarrying -- Norway; Sandstone