The RDP (Ribosomal Database Project) continues. - Bonnie L. Maidak; James R. Cole; Timothy G. Lilburn; Charles T. Parker Jr.; Paul Saxman; Jason M. Stredwick; George M. Garrity; Bing Li; Gary J. Olsen; Sakti Pramanik; Thomas M. Schmidt; James M. Tiedje (Nucleic Acids Res., 2000)