1.
Vet. Méx
;
23(3): 249-50, jul.-sept. 1992. ilus
Article
in Spanish
| LILACS
| ID: lil-118378
2.
Vet. Méx
;
23(3): 251-3, jul.-sept. 1992. ilus
Article
in Spanish
| LILACS
| ID: lil-118379