The isothermal and isobaric (vapour + liquid) equilibria (v.l.e.) for (N,N-dimethyl-formamide + 2-propanol + 1-butanol) and the binary constituent mixtures were measured with an inclined ebulliometer. The experimental results are analyzed using the UNIQUAC equation with temperature-dependent binary parameters. The comparison between the experimental and literature results for binary systems is given. The ternary v.l.e. values are predicted from the binary results.