Library of Congress loc scriptum source sru http://lx2.loc.gov:210/lcdb?version=1.1&operation=searchRetrieve& query .+ recordSchema mods dc marcxml Virtual International Authority File viaf person organization sru https://viaf.org/viaf/search?recordPacking=xml&sortKeys=holdingscount& query .+ recordSchema http%3A%2F%2Fviaf.org%2FVIAFCluster http%3A%2F%2Fviaf.org%2FBriefVIAFCluster Wikipedia wikipedia * wikipedia https://en.wikipedia.org/wiki/Special:Search? search .+ limit ^\d+$ fulltext 1 0 WorldCat scriptum source WorldCat http://www.worldcat.org/search? q .+ Morpheus morpheus ana morpheus http://services.perseids.org/bsp/morphologyservice/analysis/word? lang grc|lat engine morpheus(grc|lat) word .+ Search/Retrieval via URL maximumRecords ^\d+$ recordPosition ^\d+$