Constituency correspondence on subjects including research grants for Astronomers and the Science Research Council, secondary schools in the Pentwyn area of Cardiff, the Welsh Devolution Referendum, the Technocentre for Wales Society, Callaghan's visit to the University of Wales Institute of Science and Technology Sports Hall, funding for Welsh filmmakers, the Welsh Centre for International Affairs, the official opening of the Clarence Road Bridge, a March Past of a troop of Royal Canadian…