GEOGCS["Datum 73",
    DATUM["Datum_73",
        SPHEROID["International 1924",6378388,297,
            AUTHORITY["EPSG","7022"]],
        AUTHORITY["EPSG","6274"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4274"]]