Taylor, Craig (2) Jatau, Tchad, Emuze, Fidelis, Smallwood, John (nelson Mandela Metropolitan University (1) Taylor, Elizabeth (1) Krutilla, John V. (resources For The Future Resources For The Future, Washington, D.c., Usa), Eckstein, Otto (1) Mardia, Kanti V. (university Of Leeds, Kent, John T. (university Of Leeds, Taylor, Charles C. (university Of Leeds (1)