by Schwichtenberg, Helmut, 1942- | Wainer, S. S | ProQuest (Firm) | Association for Symbolic Logic.
by Latin-American Symposium on Mathematical Logic (7th : 1985 : State University of Campinas) [issuing body.] | Carnielli, Walter A. (Walter Alexandre) [editor.] | Alcantara, Luiz Paulo de, 1944- [editor.] | Sociedade Brasileira de Logica [issuing body.] | Sociedade Brasileira de Matematica [issuing body.] | Association for Symbolic Logic [issuing body.].