<https://secure.gravatar.com/avatar/ac6014483ee492af3e7f439aaf8007df?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://chodor-projekt.net/encyclopedia/technika-zamocowan-nowoczesne-laczniki/>