https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Theoretical aspects of the reaction of zirconium compunds and vegetable tannins with the chromium-collagen complex https://vital.seals.ac.za/vital/access/manager/Repository/vital:4512 Wed 12 May 2021 19:40:46 SAST ]]> Some aspects of the chemistry of zirconium compounds relating to their combination with collagen https://vital.seals.ac.za/vital/access/manager/Repository/vital:4513 Thu 13 May 2021 00:28:09 SAST ]]>