Ribosomes -- Evolution -- Congresses. : Genetics and evolution of RNA polymerase, tRNA, and ribosomes : [proceedings of the Oji International Seminar on Genetic and Evolutionary Aspects of Transcriptional and Translational Apparatus held at Hokkaido, 1979 / sponsored by Japan Society of the Promotion of Science] ; edited by Syōzō Ōsawa ... [and others]