K.H. Whitmire, Main Group-Transition Metal Cluster Compounds of the Group 15 Elements. W.M. Jones and J. Klosin, Transition Metal Complexes of Arynes, Strained Cyclic Alkynes and Strained Cyclic Cumulenes. H. Ogino and H. Tobita, Bridged Silylene and Germylene Complexes. I.R. Whittall, A.M. McDonagh, M.G. Humphrey, and M. Samoc, Organometallic Complexes in Nonlinear Optics I: Second-Order Nonlinearites. F. Gauvin, J.F. Harod, and H. Gweon Woo, Catalytic Dehydrocoupling: A General Strategy for the Formation of ElementElement Bonds. Subject Index. Cumulative List of Contributors Volumes 136. Cumulative Index Volumes 3742.