PROJCS["ATIG Bonne France Etat Major",GEOGCS["ATIG geographiques grades Paris (gr)",DATUM["Ancienne_Triangulation_Francaise_Paris",SPHEROID["Plessis 1817",6376523,308.64,AUTHORITY["EPSG","7027"]],AUTHORITY["EPSG","6901"]],PRIMEM["Paris RGS",2.33720833333333,AUTHORITY["EPSG","8914"]],UNIT["grad",0.0157079632679489,AUTHORITY["EPSG","9105"]],AUTHORITY["IGNF","ATIGG"]],PROJECTION["Bonne"],PARAMETER["standard_parallel_1",50],PARAMETER["central_meridian",0],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["IGNF","ATIGBONNE"]]