Fotovisueele fotometrie van sterren tot 8m.0 benoorden + 80⁰ declinatie
By: Aernout de Sitter
Publisher: "Luctor et emergo"
Published: 1936
Place of publication: Leiden
Language: dut
Number of pages: 52
Subjects: Stars; Magnitudes; Astronomical photometry
Notes: Thesis (Ph. D.)--University of Leiden, 1936.

Includes bibliographical references (p. [4]-5).