A school study by Jacek Kasprzycki from 1981.
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1936 · ★ 7.2
2024 · ★ 6.0
1934 · ★ 6.5
1934 · ★ 6.3
1932 · ★ 6.9
1929 · ★ 5.9
1947 · ★ 6.7
2021 · ★ 6.2
1941 · ★ 6.6
1956 · ★ 6.7
2005 · ★ 6.9
2021 · ★ 6.9
1950 · ★ 7.0
1933 · ★ 6.7
2006 · ★ 7.4
2022 · ★ 7.0
2014 · ★ 7.4
1939 · ★ 6.2
1939 · ★ 6.4
