<https://www.prestashop.com/forums/topic/475596-usuni%C4%99cie-id-produktu-i-kategorii/#comment-2166724>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.prestashop.com/forums/topic/475596-usuni%C4%99cie-id-produktu-i-kategorii/>