17 1 10 Douglass,R.W Additional Author Hultz, F.S. Additional Author mixed material New York Pergamon Press Inc. 1975 Douglass,R.W Additional Author Fischer, W.V. Additional Author Bobalek, E.G. Additional Author mixed material New York Pergamon Press Inc. 1975 Douglass,R.W Additional Author Sultan Ahmed Tremazi Additional Author mixed material New York Pergamon Press Inc. 1975 Douglass,R.W Additional Author Shultz, E.B. Additional Author Morgan, R.P. Additional Author mixed material New York Pergamon Press Inc. 1975 Pitcher, T.J. Additional Author Douglass,R.W Additional Author Rankin, J.C. Additional Author Duggan, R.T. Additional Author mixed material New York Pergamon Press Inc. 1975 Douglass,R.W Additional Author Das, P. Additional Author Jhingran, A.G. Additional Author mixed material New York Pergamon Press Inc. 1975 De Silva, S.S. Additional Author Douglass,R.W Additional Author mixed material New York Pergamon Press Inc. 1975 Douglass,R.W Additional Author Lieftinck, P. Additional Author mixed material New York Pergamon Press Inc. 1975 Gotsch, C.H. Additional Author Douglass,R.W Additional Author mixed material New York Pergamon Press Inc. 1975 Douglass,R.W Additional Author Machlup, F. Additional Author Lesson, K. Additional Author mixed material New York Pergamon Press Inc. 1975