[by] Ralph Abraham with the assistance of Jerrold E. Marsden. by Bruce J. Cohen, with the assistance of Madelyn M. Harrison. [by] John M. Cage, with the assistance of C. J. Bashe. by George Bachman with the assistance of Lawrence Narici. by Isadore Meschan, with the assistance of R. M. F. Farrer-Meschan. edited by G. Shabbir Cheema with the assistance of Sandra E. Ward. A. S. Hornby, with the assistance of Christina Ruse. by Kenneth Lieberthal, with the assistance of James Tong and Sai-cheung Yeung. edited by Leo A. Orleans, with the assistance of Caroline Davidson. [by] Hilton M. Briggs, with the assistance of Dinus M. Briggs.