@misc{Carstens_Carl_Wilhelm_(1887-1950)_Petrologische,
 author={Carstens, Carl Wilhelm (1887-1950)},
 howpublished={online},
 publisher={I Kommission Hos F. Bruns Bokhandel},
 language={nor},
 type={książka},
 title={Petrologische studien im Trondhjemgebiet},
}