1.
Rev. cuba. hig. epidemiol
; 8(1): 3-50, ene.-abr.1970. mapas, tab, graf
Article
in Spanish
| CUMED
| ID: cum-28361
2.
Rev. cuba. hig. epidemiol
; 7(1-2-3): 73-100, dic.1969. tab, graf
Article
in Spanish
| CUMED
| ID: cum-28351