authors, Hideo Nishimura ... [et al. ; Toshiaki Nagai, photography] ; sponsored by National Institute of Dental Research, U.S.A. ; prepared under auspices of Central Institute for Experimental Animals

U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health , for sale by the Supt. of Docs., U.S. Govt. Print. Off. 1977 DHEW publication no. (NIH) 77-946

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