Photographic measurements of the six double stars [eta] Cassiopeine, [gamma] Virginis, [xi] Bootis, 44i Bootis, [sigma] Coronae borealis, 70 Ophiuchi
Subtitle: and the computation of their orbits with special attention to these measurements.
Publisher: Enschedé en Zonen
Published: 1937
Place of publication: Haarlem
Language: eng
Number of pages: 136
Subjects: Astronomy -- Tables; Stars -- Photographic measurements