1. Foreword

   • Romolo Romano

   EditorialNotes Pages: i - i

2. Annual report of the world volcanic eruptions in 1986

   OriginalPaper Pages: 1 - 73

3. Supplements to the previous issues

   OriginalPaper Pages: 74 - 78

4. Miscellaneous information

   OriginalPaper Pages: 79 - 90

5. Historic and holocene volcanic centers in NW Mexico

   • F. Medina
   • F. Suarez
   • J. M. Espindola

   OriginalPaper Pages: 91 - 93

6. Obituary

   • Romolo Romano

   Announcement Pages: 94 - 94