@misc{_Symbols,
 howpublished={online},
 publisher={Polski Rejestr Statków},
 language={eng},
 title={Symbols related to life-saving appliances and arrangements and escape routes : guidelines for passenger safety instructions},
 type={e-książka},
 keywords={statki, ratownictwo morskie, przepisy bezpieczeństwa, wpisanie do rejestru},
}