Hi, Jorg, Thank you for your respond. Is there difference indeed between "publish", "expose", "exporting data to web" applying to web? When I wrote "publish" I ment "expose", "exporting data to web" etc. as well. Actually, I could re-phrase my question: is it possible for catalog data to be a part of the Semantic Web when standard web tools are not able to understand what is what among our RDF instructions? Or what is the aim of making our efforts? Thank you anyway, Jorg, Vladimir, National Library of Russia