GRIL NACO contribution (n.d.)
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Institut du patrimoine wallon www site, Jan. 9, 2008 (Institut du patrimoine wallon (IPW); an organization dedicated to the protection of the cultural patrimony of Wallonia, Belgium)
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Library of Congress Authorities online (2002-) http://id.loc.gov/authorities/names/no2008004657
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Techniques du vitrail au XIXe siècle, 2007: p. 6 (Insitut du patrimoine wallon, rue du Lombard 79, B-5000 Namur) | | |