Sheet NL-31 Lyon Series 1301 Edition 7-GSGS. Produced UK 1962 from World 1:1,000,000 GSGS 4646 Sheet NL-30 and pt 31 Edition 4 (1955) and Europe 1:1,000,000 GSGS 2758 Sheet NL-32 and pt 31 Edition 3 (1945) within IMW sheet lines. Published D Survey WO and AM 1963. Printed UK 8/63.