1. Heisenberg models of radical reactions

   • Y. Yoshioka
   • K. Yamaguchi
   • T. Fueno

   Original Investigations Pages: 1 - 20

2. Conformations of the thiathiophthenes and related molecules

   • Stanley C. Nyburg
   • Giannoula Theodorakopoulos
   • Imre G. Csizmadia

   Original Investigations Pages: 21 - 32

3. Selection of terms for a CI wavefunction to preserve potential surface features

   • Richard C. Raffenetti
   • Kang Hsu
   • Isaiah Shavitt

   Original Investigations Pages: 33 - 44

4. Comments on the electronic properties of cyclopropane, cyclobutane, and cyclohexane

   • Amatzya Y. Meyer
   • Reuven Pasternak

   Original Investigations Pages: 45 - 52

5. Calculation of polarizabilities by the CNDO method

   • Erik Nørby Svendsen
   • Torben Stroyer-Hansen

   Original Investigations Pages: 53 - 59

6. Fermi and Coulomb correlations in the 2¹ S state of the helium isoelectronic sequence

   • Nimrod Moiseyev
   • Jacob Katriel
   • Russell J. Boyd

   Original Investigations Pages: 61 - 67

7. Carbon-beryllium binding in CH₂Be

   • J. Stephen Binkley
   • Rolf Seeger
   • Paul von R. Schleyer

   Short Communication Pages: 69 - 72

8. Book reviews

   • Ernst -Albrecht Reinsch
   • I. Gutman
   • E. E. Nikitin

   BookReview Pages: 73 - 78