Gonzalez, C.L.
Mass campaigns and general health services by C.L. Gonzalez - Geneva World Health Organization 1965 - 87p
Preventive health services.
Communicable diseases --Developing countries --Prevention
Public health --Developing countries
O32 G589
Mass campaigns and general health services by C.L. Gonzalez - Geneva World Health Organization 1965 - 87p
Preventive health services.
Communicable diseases --Developing countries --Prevention
Public health --Developing countries
O32 G589
