RAGAN, DONAL M. GEOLOGY STRUCTURAL AN INTRODUCTION TO GEOMETRICAL TECHNIQUES - 2 - NEW YORK-U.S.A. JOHN WILEY Y SONS 1973 - 208 pag 28 cm - 0 0 . TOPOGRAPHY-ANALYSIS/FAULTS-GEOMETRY Subjects--Topical Terms: CIENCIAS PURAS Dewey Class. No.: 551.8 / R17