1409-2433 1409-2433 S1409-24332019000200299 10.15517/rmta.v26i2.38320 Panamá Panamá 00 12 2019 00 12 2019 26 2 299 318

1980 1914 1995 2000 2000 1968 1969 1976 Vinográdov 1977 2nd ed 2005