1.
16 de abril
; 12(44): 27-31, mar.-abr. 1973. tab
Article
in Spanish
| CUMED
| ID: cum-19815
2.
16 de abril
; s/n(38-9): 13-8, mar.-jun. 1972. tab, graf
Article
in Spanish
| CUMED
| ID: cum-19833