Skerman, V. B. D. A guide to the identification of genera of bacteria : with method s and digests of generic characteristics. - 2nd ed. - Baltimore : William & Wilkins , 1967. - xii, 303 p. : ill. Subjects--Topical Terms: Bacteriology -- Classification Bacteria -- numeclature National Library of Medicine Call No.: QW 4 / Sk27g 1967