TY - JOUR L1 - http://www.czasopisma.pan.pl/Content/121936/PDF-MASTER/_00_Spis_Bpast.No.69(6)_OK.pdf VL - 69 L2 - http://www.czasopisma.pan.pl/Content/121936 PY - 2021 IS - 6 EP - 1 DA - 29.12.2021 T1 - Contents SP - 1 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/121936 T2 - Bulletin of the Polish Academy of Sciences Technical Sciences ER -