"Astrometrie." . . . . . . . . . . . . "A Compendium of Spherical Astronomy, with its applications to the determination and reduction of positions of the fixed stars"@en . "A compendium of spherical astronomy : with its applications to the determination and reduction of positions of the fixed stars" . "A compendium of spherical astronomy : with its applications to the determination and reduction of positions of the fixed stars"@en . . . "A compendium of apherical astronomy : with its applications to the determination and reduction of positions of the fixed stars" . . . . . . . . "Bibliography" . "Bibliography"@en . . . . "A compendium of spherical astronomy" . "A compendium of spherical astronomy"@en . . . . "A compendium of spherical astronomy with its applications to the determination and reduction of positions of the fixed stars" . . . "A compendium of spherical astronomy with its applications to the determination and reduction of positions of the fixed stars"@en . . "A compendium of spherical astronomy : With its applications to the determination and reduction of positions of the fixed stars" . "A compendium of spherical astronomy : with applications to the determination and reduction of positions of the fixed stars" . . . . . . . . . . . . . . . . . . . . . . . . "Positie." . . "Sterren." . . "Stars Catalogs Bibliography." . . "Eigenbeweging." . . "Spherical astronomy." . . "Techniques." . . . . "Astronomie spherique." . . "Astronomie sphérique." . "Estrellas." . .