TY - JOUR N2 - The paper contains the abstracts of papers presented during 67th Open Seminar on Acoustics September 14–17, 2021. L1 - http://journals.pan.pl/Content/121822/PDF/aoa.2021.139646.pdf L2 - http://journals.pan.pl/Content/121822 PY - 2021 IS - No 4 EP - 711 DO - 10.24425/aoa.2021.139646 PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 46 DA - 2021.12.22 T1 - 67th Open Seminar on Acoustics September 14 – 17, 2021 SP - 697 UR - http://journals.pan.pl/dlibra/publication/edition/121822 T2 - Archives of Acoustics ER -