AA practical text-book on plane and spherical trigonometryA practical text-book on plane and spherical trigonometryde Webster WellsEdiciones (1)A practical text-book on plane and spherical trigonometry (1893)Leach, Shewell & Sanborn · inglésMás obras de Webster WellsModern first year algebraNueva trigonometría, plana y esféricaNew high school arithmetic