1.
Salud Publica Mex
; 16(6): 863-4, 1974.
Article
in Spanish
| MEDLINE
| ID: mdl-4456658
2.
Gac Med Mex
; 103(3): 185-93, 1972 Mar.
Article
in Spanish
| MEDLINE
| ID: mdl-5032193
3.
Salud Publica Mex
; 14(1): 7-13, 1972.
Article
in Spanish
| MEDLINE
| ID: mdl-4671775
4.
Salud Publica Mex
; 13(5): 861-7, 1971.
Article
in Spanish
| MEDLINE
| ID: mdl-5164505