Breed, R.S., Murray, E.G.D., and Hitchens, A.P.: Bergey's Manual of Determinative Bacteriology, ed. 6, Baltimore, Md., 1948, The Williams & Wilkins Co.
2.
Koser, S.A., and Fisher, B.J.: Vitamin Requirements of Oral Lactobacilli, J. D. Res . 29: 760, 1950.
3.
Rogosa, M., Wiseman, R.F., Mitchell, J.A., Disraely, M.N., and Beaman, A.J.: Species Differentiation of Oral Lactobacilli From Man Including Descriptions of Lactobacillus salivarius nov. spec. and Lactobacillus cellobiosus nov. spec, J. Bact. 65: 681, 1953.
4.
Tilden, E.B. , and Svee, M.: Further Studies of a Differential Culture Technique for Estimation of Acidogenic Bacteria in Saliva. II. Species of Lactobacilli Isolated From Saliva and Their Distribution in a Group of Children, J. D. Res. 31: 831, 1952.
5.
Clement, A.J. , and Rae, W.: Field Studies in the Southern Kalahari, August, 1951. III. Bacteriological Investigation of Saliva of Various Bakalagadi School Children and Bushmen, J. D. A. South Africa8: 64, 1953.
6.
Harrison, R.W. , and Opal, Z.Z.: Comparative Studies on Lactobacilli Isolated From the Mouth and Intestine, J. D. Res. 23: 1, 1944.
7.
Orland, F.J. : The Differentiation of Lactobacilli: A Review, Internat. D. J. 4: 123, 1953.
8.
Idem: The Oral Bacterial Flora as Related to Dental Caries in the Syrian Hamster, J. D. Res. 25: 455, 1946.
9.
Rogosa, M., Mitchell, J.A., and Wiseman, R.F.: A Selective Medium for the Isolation and Enumeration of Oral and Fecal Lactobacilli , J. Bact. 62: 132, 1951. (A note.)
10.
McLaughlin, C.B.: A Readily Prepared Medium for the Cultivation of the Lactobacilli, J. Bact. 51: 560, 1946.
11.
Slavin, D.: Production of Antisera in Rabbits Using Calcium Alginate as an Antigenic Depot , Nature (London) 165: 115, 1950 .
12.
Williams, N.B. , Norris, R.F., and Gyorgy, P.: Antigenic and Cultural Relationships of Lactobacillus bifidus and Lactobacillus parabifidus , J. Infect. Dis. 92: 121, 1953.
13.
Wilson, G.S. , and Miles, A.A.: The Serological Differentiation of Smooth Strains of the Brucella Group, Brit. J. Exper. Path . 3: 1, 1932.
14.
Sharpe, M.E. : A Serological Classification of Lactobacilli , J. Gen. Microbiol. 12: 107, 1955.
15.
Lancefield, R.C.: A Serological Differentiation of Human and Other Groups of Hemolytic Streptococci, J. Exper. Med . 57: 571, 1933.
16.
Williams, N.B. : Antigenic Components of Lactobacilli of Human Oral Origin, J. Infect. Dis. 82: 31, 1948.
17.
Orland, F.J. : A Correlation of Antigenic Characteristics Among Certain Bacteria of the Lactobacillus Group, J. Infect. Dis. 86: 63, 1950.
18.
Harrison, R.W. : Studies on Lactobacilli. III. Relationship of Immunological Specificity and Fermentative Capacity, J. Infect. Dis. 70: 69, 1942.