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Rev. cuba. med. trop
; 39(2): 63-8, mayo-ago. 1987.
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Rev. cuba. hig. epidemiol
; 20(3): 386-92, jul.-sep. 1982. tablas
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Rev. cuba. hig. epidemiol
; 20(3): 362-76, jul.-sep. 1982. tablas
Article
in Spanish
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| ID: cum-7737
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Rev. cuba. hig. epidemiol
; 19(4): 361-8, oct.-dic. 1981. Ilus., tablas
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Rev. cuba. hig. epidemiol
; 19(3): 308-14, jul.-sep. 1981. tablas
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