1.
s.l; s.n; 1990. 25 p. ilus, tab.
Non-conventional
in Spanish
| LILACS
| ID: lil-132716
2.
s.l; s.l; 1990. 14 p. ilus.
Non-conventional
in Spanish
| LILACS
| ID: lil-132717
3.
s.l; Secretaría de Energía, Minas e Industria Paraestatal; 1985. 67 p. ilus, tab. (CNSNS-IT-001).
Monography
in Spanish
| LILACS
| ID: lil-132718