Iskani niz je bil najden v PREVODIH:
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Pertinax
en PF resins, phenol-aldehyde resin, phenol-formaldehyde plastic, phenolic resin
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Petrochemische und Plastik Herstellung
en petrochemical and plastic production
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PF-Harz
en PF resins, phenol-aldehyde resin, phenol-formaldehyde plastic, phenolic resin