Lex Kreffer Staff Member Public Services Name Drs. L.A. Kreffer Telephone +31 71 527 4366 E-mail l.a.kreffer@library.leidenuniv.nl Staff Member Public Services Universitaire Bibliotheken Leiden Bibliotheken en Onderwijs Work address Van Steenis Einsteinweg 2 2333 CC Leiden Room number BIbliotheek Gorleaus Contact +31 71 527 4366 l.a.kreffer@library.leidenuniv.nl No relevant ancillary activities