NNew plane and spherical trigonometryNew plane and spherical trigonometryde Webster WellsEdiciones (2)New plane and spherical trigonometry (1904)D.C. Heath & co. · inglésNew plane and spherical trigonometry (1900)D.C. Heathe · inglésMás obras de Webster WellsModern first year algebraNueva trigonometría, plana y esféricaNew high school arithmetic