Abstract: Contributions for each year are numbered consecutively and form one or two volumes annually (the years 1906, 1911-13, 1916, 1920-21, 1924 are each in 2 vols.) ; Mode of access: Internet. ; Issued by: Christiania videnskabs-selskab. I--Mat.-naturv. klasse, 1894-1924; Norske videnskaps-akademi i Oslo. I--Mat.-naturv. klasse, 1925-1974; Norske videnskaps-akademi. I--Mat.-naturv. klasse, 1975-
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