TY - GEN AU - Zygmunt ZiembiƄski AU - Zdzislaw Ziemba TI - Practical logi (Logika praktyczna, engl. - Transl. from the polish by Leon Ter-Oganian) With the appendix on Deontic logic by Zdzislaw Ziemba PY - 2018 PB - UR - ER -