Female vocal group Pro Contra in the song “Nie kwękać” (‘Don’t grumble’) – music video shot at Katowice Steelworks, 1977
by MAANAM
Female vocal group Pro Contra in the song “Nie kwękać” (‘Don’t grumble’) – music video shot at Katowice Steelworks, 1977
by MAANAM
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Source: [cyfrowa.tvp.pl](https://cyfrowa.tvp.pl/video/muzyka,nie-kwekac,60003540)