Autores:H.C. Scraggs, G. Hackman, R. Churchman, R.S. Chakrawarthy, T.E. Drake, G.F. Grinyer, C.J. Pearson, G.C. Ball, N. Cowan, M.B. Smith, E.S. Cunningham, P.E. Garrett, P. Bricault, G. Cronkhite, P. Finlay, R.A.E. Austin, A.J. Boston, B. Jones, B. Hyland, J.R. Leslie