Polyfunctionalized Pyrroles and Pyrazoles from Conjugated Azoalkenes (O.A. Attanasi et al.). Application of Diels-Alder Cycloaddition Chemistry for Heterocyclic Synthesis (A. Padwa). Three-Membered Ring Systems (A. Padwa, S.S. Murphree). Four-Membered Ring Systems (J. Parrick, L.K. Mehta). Five-Membered Ring Systems. Thiophenes & Se & Te analogs (J.B. Press, R.K. Russell). Pyrroles and benzo derivatives (R.J. Sundberg). Furans and benzo derivatives (W. Friedrichsen, K. Pagel). With more than one N atom (S.A. Lang, Jr., V.J. Lee). With O & S (Se, Te) atoms (R.A. Aitken).With O & N atoms (G.V. Boyd). Six-Membered Ring Systems. Pyridine and benzo derivatives (J.E. Toomey, R. Murugan). Diazines and benzo derivatives (G. Heinisch, B. Matuszczak). Triazines, tetrazines and fused ring polyaza systems (D.T. Hurst). With O and/or S atoms (J.D. Hepworth, B.M. Heron). Seven-Membered Rings (D.J. LeCount). Eight-Membered and Larger Rings(G.R. Newkome). Subject index.