1.
Rev. argent. cir
;
57(1/2): 16-20, jul.-ago. 1989. tab
Article
in Spanish
| LILACS
| ID: lil-78816
2.
Rev. argent. cir
;
57(1/2): 21-5, jul.-ago. 1989.
Article
in Spanish
| LILACS
| ID: lil-78817