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Hercules Inc.1998a. Regalrez 1018, 1085, 1094, and 1126 hydrocarbon resins. Product data sheet. January 27. Wilmington, Del.

Hercules Inc.1998b. Regalrez 1128 and 1139 hydrocarbon resins. Product data sheet. January 27. Wilmington, Del.

Hercules Inc.1998c. Regalrez hydrocarbon resin. Product data sheet. January 27. Wilmington, Del.

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Landrey, G. J., 1990. The use of fluorescent microscopy in furniture conservation. ICOM Committee for Conservation preprints, 9th Triennial Meeting, Dresden. Paris: ICOM. 2:835–39.

National Gallery of Art, 1996. Synthetic low molecular weight resins: Europe information sheet. October 31. Washington, D.C.

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SOURCES OF MATERIALS

Hercules Inc. Resin Division 500 Hercules Rd. Wilmington, Del. 19808-1599 www.herc.com/businesses/resins.htm

Shell Chemical Co. Houston, Tex. 77251

Ciba-Geigy Additives Division Hawthorne, N.Y. 10532

Kwastex B.V. Postbus 219 7600 AE Almelo The Netherlands

Aristoforma–Interchema Postbus 75560 1118 ZP Schiphol The Netherlands

AUTHOR INFORMATION

HANS PIENA received his M.Sc. in archaeology at the University of Amsterdam (1992) and his B.A. in the conservation of furniture and interiors at the University of Professional Education (1995) in Amsterdam. Pregraduate internships included work in the furniture conservation laboratories at the Rijksmuseum in Amsterdam and the H. F. du Pont Winterthur Museum in Wilmington, Delaware. Piena is currently the head of wood conservation at the Regional Conservation Laboratory of the Province of Gelderland, where he is responsible for the preventive and active conservation of wooden objects of the 130 museums and 75 historical societies in the region and the training of conservation interns and museum personnel. He was recently appointed as senior tutor for the conservation of furniture at the University of Professional Education in Amsterdam. Address: Gelders Oudheidkundig Contact, Postbus 4040, 7200 BA Zutphen, The Netherlands. E-mail: H.Piena@chello.nl