"Astronomy." . . . . "Stars Catalogs." . . "Stars." . . "Astronomy Observations." . . "Royal Observatory, Greenwich." . . "Étoiles Catalogues." . . . . "Second nine-year catalogue of stars for the epoch 1900.0, from observations with the transit-circle made at the Royal Observatory, Greenwich"@en . . . . . . . "Second nine-year catalogue of stars for the epoch 1900.0 : from observations with the transit-circle made at the Royal Observatory, Greenwich under the direction of Sir William Henry Mahoney Christie"@en . . "Second nine-year catalogue of stars for the epoch 1900·0 from observations with the transit-circle made at the Royal Observatory, Greenwich" . . . "Second nine-year catalogue of stars for the epoch 1900·0 from observations with the transit-circle made at the Royal observatory, Greenwich"@en . . "Second nine-year catalogue of stars for the epoch 1900·0 : from observations with the transit-circle made at the Royal Observatory, Greenwich"@en . . . "Second nine-year catalogue of stars for the epoch 1900·0, from observations with the transit-circle made at the Royal observatory, Greenwich" . "Catalogs" . . "Catalogs"@en . . . . . . . . "Second nine-year catalogue of stars for the epoch 1900-0 : from observations with the transit-circle made at the Royal observatory, Greenwich" . . "Observations"@en . . . "Greenwich second nine-year catalogue of stars for 1900"@en .