This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Celtic knot twopart circle horizontal. symbol Classic Celtic knot design redrawn by Sasha Kopf Version mentioned in George Bain's classical Celtic Art The Methods of Construction first impression twenty seccond impression on page Varios no in GB and the States for example ISBN see ox ac uk ISBN according to Gangleri PDArt