Platt, John I. Simple geological structures a series of notes and map exercices John I. Platt and John Challinor - Metric ed. - London George Allen and Unwin Limited 1977 - 56p. figs; tables ISBN: 0-04-550020-7 Subjects--Topical Terms: Geological StructuresMap Exercises Universal Decimal Class. No.: 551:528.92 / PLA