Big plant on post stamp

Keywords:

collection, stamp, picture, communications, postage, mail, post, postmark, label, zigzag, canceled, mark, philately, illustration, correspondence, retro, vintage, Poland, Europe, gray, brown, building, tower, power, refinery, gas, crane, development, economy, energy, chemical, industry, factory, chimney, pipe, plant, nationalization, pollution, architecture, symbol, city, town, progress, work,