edited by W.H. Bain and K.M. Taylor. edited by I.M. MacLeod and A.D. Heher. edited by J.M. Bonga and D.J. Durzan. edited by P.M. Endt and M. Demeur. edited by S.M. Perren and E. Schneider. edited by T.T. Ngo and H.M. Lenhoff. edited by E. R. Sears and L. M. S. Sears. edited by J.F. Lemontt and W.M. Generoso. edited by V.H. Heywood and D.M. Moore. edited by W.N. Everitt and B.D. Sleeman.