Niels Friis has written:
'Diderik Buxtehude'
B. Friis has written: 'Kersti'
Karsten Friis has written: 'Identitet og politikk'
Lilli Friis has written: 'Ung omkring 1900'
K. Friis Hartmann has written: 'Maskintegning'
Achton Friis has written: 'Danmarkekspeditionen til Groenlands nordostkyst'
M. Friis Moeller has written: 'Den farende svend' 'Hjaelp'
Astrid Friis has written: 'Rigsraadet og Statsfinanserne i Christian III. s Regeringstid'
Niels Guttormsen has written: 'Niels Guttormsen'
J. S. Friis has written: 'Transformation geometry' -- subject(s): Geometry, Transformations (Mathematics)
Hans Wiingaard Friis has written: 'Auga gestsins' -- subject(s): Iceland, Pictorial works, History
Knud Friis Johansen has written: 'Les vases sicyoniens' 'The Attic grave-reliefs of the classical period'
Niels Haarloev has written: 'Zoologi-oekologi'