Sheet I-37Q Rutba GSGS 3919 (IDR 9002) Second Edition 1949, reprinted K501 (GSGS 3919) Edition 2-GSGS 1958. Reprinted from IDR 9002/5202 June 1942 edition. Published WO 1943. Reproduced WO 1949. Printed for D Survey (WO and AM) by OS. 5,000/9/58/5821/O.S. Grid B.