Islands in the Indian Ocean   Creator:   J. & C. Walker (Firm) ( Author, Primary ) Walker, John, 1759-1830 ( Cartographer ) Walker, C. ( Engraver ) Publication Date:   [188-?] Publisher:   Society for the Diffusion of Useful Knowledge ( London ) Type:   Map Format:   11 maps : color ; on 1 sheet 33 x 42 cm Source Institution:   SOAS University of London Holding Location:   SOAS University of London Subject Keyword:   Indian Ocean Region -- Maps Indian Ocean Region Spatial Coverage:   Indian Ocean Africa -- Seychelles Africa -- Madagascar Africa -- Mauritius Asia -- India -- Andaman Islands Genre:   map Language:   English Islands in the Indian Ocean ( 2 volumes )