Información de la producción

The International Research Group on Wood Preservation (IRG)
www.irg-wp.com

Western-European Institute for Wood Preservation (WEI)
www.wei-ieo.org

American Wood Preservers' Association (AWPA)
www.awpa.com

British Wood Preserving and Damp-proofing Association (BWPDA)
www.bwpda.co.uk