Author: Hackman, V., 1904.:
Title: Petrographische Beschreibung des Nephelinsyenites von Umptek und einiger ihn begleitenden Gesteine.
Description: Kuopio: O.W. Backmans Buchdruckerei, 1904. 8vo, 24.6cm. Pp. viii,96, 14 large microphotos on 7 plates. Paperbound, orig. printed wrappers. Fine. - Doctoral thesis. Umptek or Khibiny Mountains, Kola Peninsula. Offprint from Fennia, vol. 11 nr. 2.

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