1. Nuclear DNA amounts in vertebrates;Bachmann;Brookhaven Symp. Biol.,1972
2. Estudio chromosomico de Caecilia occidentalis (Gymnophiona, Caeciliidae);Barrio;Physis,1970
3. El complemento chromosomico de Siphonops paulensis (Gymnophiona, Caeciliidae);Barrio;Physis,1972
4. The cytogenetics of Chthonerpeton indistinctum (Amphibia: Gymnophiona);Barrio;Caryologia,1971
5. Interspecific variability of DNA content in Amphibia;Beçak;Experientia,1970