Dwerryhouse, Arthur Richard 1867- Geological and topograhical maps, their interpretation and use : a handbook for the geologist and civil engineer / By Arthur R. Dwer ryhouse - 2nd ed. - London : E. Arnold , 1919 - vii, 133 p. : ill., diagrs. ; 22 cm Subjects--Topical Terms: Geology --Maps.------Cartography.--Maps.------Topographical drawing.--Maps.------ Dewey Class. No.: 550 DWE