Sheet NA 49-8 Belaga Series T503 Edition 1–GSGS 1964. Reproduced from Sarawak Series 14 1:200,000 mapping LSD Sarawak 1962. NEI grid added 42 Survey Engineer Regiment 1964. Published D Survey MOD 1964 for DNMM. Printed 84 Survey Squadron RE. 4,500/5/64. Netherlands East Indies Grid Equatorial Zone.