1816-8949 1816-8949 S1816-89492019000100043 10.18004/anales/2019.052(01)43-058 Paraguay Paraguay 00 04 2019 00 04 2019 52 1 43 58

1 1983 2 1999 3 2017 4 2001 5 2002 6 2001 7 1999 8 1984 9 1967 10 1995 11 1974 12 1985 13 1993 14 1981 15 1992 16 1995 17 2002 18 1986 19 1996 20 1985 21 1998 22 1993 23 2004 24 1996 25 1998 26 1980 27 1996 28 2001 29 2002 30 3 3 1 31 3 3 2-14 32 4 4 3 33 7 7 10 34 1991 35 1978 36 1985 Vol. 3 37 1988 38 4 4 10-3 39 21 21 4-9 40 31 31 1-22 41 1996 42 1980 43 2001 44 18 18 4 45 2002 46 10 10 16 47 2003 48 1981 49 1980 50 1952 51 1949 52 1991 53 2004 54 1999 55 2001 56 1905 57 1988 58 1996 59 1963 60 1975 61 2004 62 1962 63 1991 64 1992 65 1996 66 1998 67 1998 68 1919 69 2007 70 1971 71 1972 72 2002 73 1969 74 1919 75 1927 76 1992 77 2002 78 1991