https://www.pzl.waw.pl/tag/korozja/
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https://www.flightglobal.com/wsk-pzl-rzeszow/15357.article
WSK PZL-Rzeszow of Poland has introduced an up-rated version of its popular GTD-350 turbo-shaft engine, which powers the Mil Mi-2 helicopter. The GTD-350W...
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