The search for missing links between self-replicating nucleic ACIDs and the RNA world Kenneth D. JamesAndrew D. Ellington OriginalPaper Pages: 515 - 530
Preferential uptake of ammonium ions by zinc ferrocyanide P. S. BratermanG. ArrheniusW. Paplawsky OriginalPaper Pages: 531 - 538
Enantioselective autocatalysis. III. Configurational and conformational studies on a 1,4-benzodiazepinooxazole derivative Benjamin L. MillerWilliam A. Bonner OriginalPaper Pages: 539 - 547
The phylogeny of trnas seems to confirm the predictions of the coevolution theory of the origin of the genetic code Massimo Di Giulio OriginalPaper Pages: 549 - 564
Two types of aminoacyl-trna synthetases could be originally encoded by complementary strands of the same nucleic ACID Sergei N. RodinSusumu Ohno OriginalPaper Pages: 565 - 589