K. Burger, U. Wucherpfenning, and E. Brunner, Fluoro Heterocycles with Five-Membered Rings. G. Doddi and G. Ercolani, Thiopyrylium, Selenopyrylium, and Telluropyrylium Salts. E. Alcalde, Heterocyclic Betaines:Pyridinium (Imidazolium) Azolate Inner Salts with Several Interannular Linkages. C.J. Easton, C.M.M. Hughes, G.P. Savage, and G.W. Simpson, Cycloaddition Reactions of Nitrile Oxides with Alkenes. Cumulative Index of Authors, Volumes 1-60. Cumulative Index of Titles, Volumes 1-60. Cumulative Subject Index, Volumes 55-60.