1.
Lima; EsSalud; 2007. 37 p.
Monography
in Spanish
| LILACS, LIPECS
| ID: biblio-871280
2.
Iquitos; Instituto Peruano de Seguridad Social; 1998. 112 p. ilus, tab.
Monography
in Spanish
| LILACS, LIPECS
| ID: biblio-1114214
3.
s.l; EsSalud; s.f. [44] p. tab.
Monography
in Spanish
| LILACS, LIPECS
| ID: biblio-1114219