Chemistry of heterocyclic compounds : proceedings of the IXth Symposium on chemistry of heterocyclic compounds, Bratislava, Czechoslovakia, 23-28 August 1987 / ed. by J. Kováč and P. Zálupský

Chemistry of heterocyclic compounds : proceedings of the IXth Symposium on chemistry of heterocyclic compounds, Bratislava, Czechoslovakia, 23-28 August 1987 / ed. by J. Kováč and P. Zálupský