Sheet SB 50 A TG Selatan GSGS 4684 First Edition 1950. Reprinted from First Edition (AMS 1) AMS T532 1945. Compiled from Borneo 1:100,000 reconnaissance survey. Published WO 1950. Reproduced WO 1950. 4225/14 RE/Mar 50/1500. British Metric Grid, NEI Equatorial Zone.