Published in Öfversigt Kongl. Vetensk.-Akad. Förhandl, in 1887, in volume 1887, pages 25-29

Created: 2011-06-03, modified: 2017-01-04

Published in Öfversigt Kongl. Vetensk.-Akad. Förhandl., in 1887, in volume 1887, issue 1, pages 25-29

Created: 2011-09-29, modified: 2017-01-04