Publicaci'on Cient'ifica / Organizaci'on Panamericana de la Salud.
Publicaci'on Cient'ifica / Organizaci'on Panamericana de la Salud.
- Washington, D.C. : Organizaci'on Panamericana de la Salud, 1950-.
- DC.PAHO.
eng fre por spa.
Communicable disease control--periodicals.
Public health--periodicals.
Chronic disease--periodicals.
Americas.
eng fre por spa.
Communicable disease control--periodicals.
Public health--periodicals.
Chronic disease--periodicals.
Americas.