1
Publicado 1979
“...American Public Health Association...”
2
Publicado 1894
“...American Public Health Association...”
3
4
por Pelton, Walter J.
Publicado 1949
“...American Public Health Association . Dental Health Section...”Publicado 1949
5
Publicado 1963
“...American Public Health Association...”
6
Publicado 1963
“...American Public, Health Association...”