1. Editorial

   EditorialNotes Pages: i - i

2. Numerical integration of overlap and ligand contributions to the electric field gradient

   • Reiner Reschke
   • Alfred Trautwein

   Original Investigations Pages: 85 - 96

3. Quantum chemical studies on electrophilic addition

   • Alan C. Hopkinson
   • Min H. Lien
   • Keith Yates

   Original Investigations Pages: 97 - 109

4. A MO-theoretical study of the hydrogen bond in (HCOOH)₂, (HCONH₂)₂ and (B(OH)₃)₂

   • Shinichi Yamabe
   • Kazuo Kitaura
   • Kichisuke Nishimoto

   Original Investigations Pages: 111 - 131

5. On a possible catalytic effect of water on some nucleophilic substitution reactions in “Inert” solvents

   • Giuliano Alagona
   • Eolo Scrocco
   • Jacopo Tomasi

   Original Investigations Pages: 133 - 145

6. On the application of a classical perturbation theory to the theory of coupled fields

   • Hermann Hartmann
   • Kyu -Myung Chung

   Original Investigations Pages: 147 - 156

7. Some remarks on the SCRF theory of solvent effects and the calculation of proton potentials

   • O. Tapia

   Original Investigations Pages: 157 - 169

8. Environmental effects on second order perturbation energy

   • O. Tapia
   • E. Poulain
   • F. Sussman

   Short Communication Pages: 171 - 174