MergenhagenS.E., and ScherpH.W. (eds): Comparative Immunology of the Oral Cavity, Department of Health, Education, and Welfare Publication No. (NIH) 73-438, 1973.
2.
Streptococcus Mutans and Dental Caries, Department of Health, Education, and Welfare Publication No. (NIH) 74-286, 1974.