RT Book, Whole DB /z-wcorg/ DS http://worldcat.org ID 30530047 LA English T1 A treatise on navigation, and nautical astronomy : adapted to practice, and to the purposes of elementary instruction ; containing the elementary principles of algebra, geometry, plane and spherical trigonometry, and navigation ... A1 Riddle, Edward,, PB Baldwin, Cradock, and Joy PP London YR 1824