WORLD Health Organization
Epidemiology, etiology, and prevention of periodontal diseases - Geneva WHO 1978 - 60 p.- - WHO Technical report series 621 .
Includes reference.
9241206217
Periodontics
Dentistry
WHO Technical report series 621
617.632 / WOR
Epidemiology, etiology, and prevention of periodontal diseases - Geneva WHO 1978 - 60 p.- - WHO Technical report series 621 .
Includes reference.
9241206217
Periodontics
Dentistry
WHO Technical report series 621
617.632 / WOR