To determine your unknown's group number and genus consult Bergey's Manual of Determinative Bacteriology (9th edition). Ask for this book available at Cline Library's Ask Us! Desk. Once you have some possibilities for your unknown's genus, open Cline Library’s ebook copy of Bergey's Manual of Systematics of Archaea and Bacteria.
For more information on using Bergey's Manual, see the course guide for BIO 205L/305W.
