TY - GEN L1 - http://kpbc.umk.pl/Content/201574/PDF/Walecka_Ewa_973_WSK.pdf L2 - http://kpbc.umk.pl/Content/201574 T1 - Walecka Ewa UR - http://kpbc.umk.pl/dlibra/publication/edition/201574 ER -