REVISTA PANAMERICANA DE SALUD PUBLICA
journal27985
E147009
II
1020-4989
English:(Portuguese and Spanish)
Rivista
Pan American Health Organization:525 23rd Street Northwest:Washington, DC 20037:(202)974-3527, EMAIL: sha@paho.org, INTERNET: http://www.paho.org/english/ped/pednlen.htm, Fax: (202)974-3674
1997
cannot
can
true