1.
Rev. segur. soc
;
(21): 29-30, ene.-mar. 1989.
Article
in Spanish
| LILACS
| ID: lil-68628
2.
Rev. segur. soc
;
(21): 31-3, ene.-mar. 1989.
Article
in Spanish
| LILACS
| ID: lil-68629