Geological map of Central Spitsbergen. (1:200,000. [Maps of] Von Post, Nordenskiöld, Sefström, Wahlenberg [and] Goës Galcier[s]. 1:50,000) /
De Geer, Gerard Jakob.
[Stockholm] : Generalstabens Litografiska Anstalt,
1910.
The pamphlet is in an envelope.
With: G. de Geer's Geological Excursion to Central Spitzbergen.