"Perturbation." . . "1800 - 1899" . . . . . "A Comparison of the Solar Theories of Newcomb and LeVerrier, with Conversion Tables for the Nineteenth Century"@en . . . "Tables"@en . "A comparison of the solar theories of Newcomb and Le Verrier with conversion tables for the nineteenth century"@en . . . . "Solar theories of Newcomb and Le Verrier"@en . . "Solar theories of Newcomb and Le Verrier" . "A comparison of the solar theories of Newcomb and LeVerrier, with conversion tables for the nineteenth century" . "Tables" . . . . "A comparison of the solar theories of Newcomb and Le Verrier : with conversion tables for the nineteenth century" . . . . . . "A Comparison of the solar theories of Newcomb and Le Verrier, with conversion tables for the 19th century, by Kenneth P. Williams" . "A comparison of the solar theories of Newcomb and LeVerrier with conversion tables for the nineteenth century"@en . "History"@en . "A comparison of the solar theories of Newcomb and LeVerrier : with conversion tables for the 19th century" . . "History" . . . . . . . . "Sun" . .