TY - GEN L1 - http://iura.uj.edu.pl/Content/416/PDF/I%20KA%202%2041%2016%2004%201941.pdf L2 - http://iura.uj.edu.pl/Content/416 KW - state of higher necessity UR - http://iura.uj.edu.pl/dlibra/publication/edition/416 ER -