Lefebvre de Beauvray Claude RigobertLefebvre de Beauvray Claude Rigobert/services/engine/search/sru?operation=searchRetrieve&version=1.2&maximumRecords=50&collapsing=true&exactSearch=true&query=(dc.creator adj "Lefebvre de Beauvray Claude Rigobert" or dc.contributor adj "Lefebvre de Beauvray Claude Rigobert")