INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (4703, 'EPSG', 4703, '+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs', 'GEOGCS["Mhast 1951",DATUM["Missao_Hidrografico_Angola_y_Sao_Tome_1951",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6703"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4703"]]');