1. Superweak interactions and the biological time direction

   • A. S. Garay

   OriginalPaper Pages: 1 - 5

2. Chirality and stereochemical recognition in DNA-phytohormone interactions: A model approach

   • Francis H. Witham
   • Lawrence B. Hendry
   • Orville L. Chapman

   OriginalPaper Pages: 7 - 15

3. Quartz fibers as templates for biopolymers

   • Clifford Frondel

   OriginalPaper Pages: 17 - 25

4. Early evolution of cellular electron transport: Molecular models for the ferredoxin-rubredoxin-flavodoxin region

   • Gunnar von Heijne
   • Clas Blomberg
   • Herrick Baltscheffsky

   OriginalPaper Pages: 27 - 37

5. Aminoacyl-tRNA synthetase families and their significance to the origin of the genetic code

   • Ronald Wetzel

   OriginalPaper Pages: 39 - 50

6. Degradation of biochemical activity in soil sterilized by dry heat and gamma radiation

   • Katherine L. Shih
   • Kenneth A. Souza

   OriginalPaper Pages: 51 - 63

7. Book reviews

   • John B. Carlson
   • Herrick Baltscheffsky

   BookReview Pages: 65 - 66

8. Chemical evolution and the origin of life

   • Martha W. West
   • Rowena A. Koch
   • Sherwood Chang

   Legacy Pages: 67 - 73

9. The evolution of the protein synthesis system.I. A. Model of a primitive protein synthesis system

   • H. Mizutani

   Erratum Pages: 75 - 76

10. Announcement

    Announcement Pages: 77 - 77