contributors, R. C. Bagai ... [et al.] ; editors, Alan C. Sartorelli and David G. Johns. Contributors: W. J. Bair ...[et al.] ; editors, H. C. Hodge, J. N. Stannard and J. B. Hursh. contributors, J. R. Aist ... [et al.] ; edited by R. Heitefuss and P. H. Williams. contributors, R.K. Blackwood ... [et al.] ; editors, J.J. Hlavka and J.H. Boothe. editors, Alan C. Sartorelli, David G. Johns. contributors, Daniel Dworkin ... [et al.] ; edited by Roger E. Kasperson and Jeanne X. Kasperson.