1.
Rev Sanid Hig Publica (Madr)
; 44(3): 283-327, 1970 Mar.
Article
in Spanish
| MEDLINE
| ID: mdl-5498011
2.
Rev Sanid Hig Publica (Madr)
; 42(3): 203-26, 1968.
Article
in Spanish
| MEDLINE
| ID: mdl-5737562