On late palaeozoic glaciations in the northern hemisphere
By: by Helge G. Backlund
Contributors: Uppsala universitet
Series: Uppsala universitets årsskrift -- 1929
Publisher: Almqvist & Wiksell
Published: 1929
Place of publication: Uppsala
Language: eng
Subjects: Stratigraphic Geology
Notes: Thesis (doctoral)--Uppsala universitet, 1929.

"Cited litterature": p. 9.