Environmental studies in the Cynon Valley
Maddox, David, Evans, Geoffrey, Mear, John F., Hopkins, Gareth, Evans, Tom J., Jones, C. Neil, Davies, David Leslie, Thomas, Tydfil, Morgan, Marian, Jones, John Llewelyn, Morgan, Kenneth, Cooke, Stephen, Messer, Brian, Isaacs, Alison, Richards, Jeffrey E., Hughes, Margaret, Davies, Elfed, Pugh, Gareth, O'Brien, Antony Mor, Bevan, Ray, Chidgey, Janie, Burton, William John, Arnold, Richard,