O Secretaria de Agricultura e Abastecimiento creator Instituto Biológico text bl 1937 1989 continuing a -En la revista el nombre figura como "O BIOLOGICO" -Existencias: 1937 v. 3, no. 10; 1940 v. 6, no. 12; 1941 v. 7, no. 3; 1944 v. 10, no. 1; 8-12; 1945 v. 11, no. 1-9; 11-12; 1946 v. 12, no. 1-4; 6; 11; 1947 v. 13, no. 1-2; 4; 9; 11-12; 1948 v. 14, no. 1-2; 4-6; 1949 v. 15, no. 8; 1950 v. 16, no. 1-2; 6-7; 1952 v. 18, no. 12; 1953 v. 19, no. 1-12; 1954 v. 20, no. 1-8; 1955 v. 21, no. 12; 1956 v. 22, no. 1-2; 5-7; 1957 v. 23, no. 12; 1962 v. 28 no. 7; 1971 v. 37, no. 1-3; 1972 v. 38, no. 1-12; 1973 v. 39, no. 1-5, 7, 9-12; 1974 v. 40, no. 2-3; 5-10; 1975 v. 41, no. 1, 4, 6, 11; 1976 v. 42, no. 1-2; 5-10; 1977 v. 43, no. 1-12; 1978 v. 44, no. 1-12; 1979 v. 45, no. 1-12; 1980 v. 46, no. 1-2; 5-6; 8-12; 1981 v. 47, no. 1, 3, 11-12; 1984 v. 50 no. 1-6 + supl.; 1985 v. 51 no. 7-9; 12; 1988 v 54, no. 1-12; 1989 v. 55, no. 1-2 Biología Agricultura 0366-0567 AR-ReUNN 260630 20260702003714.0 249659 spa