cultuurautomatisering Basishandleiding WordPerfect 5.1 : leer nu WP 5.1 in 20 minuten! / Willem Melching & Peter Doorn cultuurautomatisering Basishandleiding WordPerfect 5.1 : leer nu WP 5.1 in 20 minuten! / Willem Melching & Peter Doorn Leather conservation : a current survey / ed. by James Jackman