, Existencias: (1974: 1-1-2) (1975: 2-3) (1975: 2-4) (1976: 3-5) (1976: 3-6) (1977: 4-7) (1977: 4-8) (1978: 5-9) (1978: 5-10) (1979: 6-11) (1979: 6-12) (1980: 7-13) (1980: 7-14) (1981: 8-15) (1981: 8-16) (1982: 9-17) (1982: 9 -18) (1983: 10-19-20) (1984: 11-21-22) (1985-86: 12-13-23-24) (1987-88: 14-15-25-26) (1990: 16-27) (1997: 17-28)-

Place hold on Ecosur

By Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET.

Place hold on Ecosur

, -Existencias: 1974-1988; 1990; 1997 v. 1-17, no. 1-28

Place hold on Ecosur

, Existencia: 1978- 5(9)

Place hold on Ecosur