1.
México; CISS/CEDESS; 1997. 388 p. tab.(CISS/CEDESS. Serie Estudios, 34).
Monography
in Spanish
| LILACS
| ID: lil-377228
2.
s.l; s.n; s.d. 9 p.
Non-conventional
in Spanish
| LILACS
| ID: lil-177