P.R. Stewart Ribonucleic acids - Berlin Springer-Verlag 1973 - 268p P.R. Stewart & D.S Lettham: Ribonucleic acids. Berlin. Springer-Verlag, 1973. 3-540-06190-8--(574.19212STE) ENGLISH ISBN: 3-540-06190-8 Dewey Class. No.: 574.19212 / STE