Flevum2020-06-17T00:59:10ZJ.H.F. Bloemerstag:atlantides.org,2009:pleiades/55612edf47f41cc85d6d12a2c25a627dFlevumtag:atlantides.org,2009:pleiades/55612edf47f41cc85d6d12a2c25a627d2020-06-17T00:59:10ZAn ancient island or island group, attested by literary or documentary sources, whose precise location cannot be determined today