Sheet 31A Mediterranean GSGS 2957 First Edition 1937, reprinted 1945. Sheet 31A (1/M North H–L 30–36). Published WO 1937. Compiled and drawn WO, heliozincographed OS 1937. 10,000/3/45.Ch. Extruded west for coastal area of Spain and Portugal, extruded east for rivers Orontes and Jordan. Layered.