%0 Journal Article %T ABSENCE OF RIBOSOMAL RNA SYNTHESIS IN THE ANUCLEOLATE MUTANT OF XENOPUS LAEVIS %A Brown, Donald D. %A Gurdon, J. B. %A , %J Proceedings of the National Academy of Sciences %@ 0027-8424 %D 1964-01-01 %I Proceedings of the National Academy of Sciences %~ DeepDyve