Associations to which Oz belongs
Oz is a member of the following associations:
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 | RILEM International Union of Laboratories and Experts in Construction Materials, Systems and Structures | 
 | APPC Associação Portuguesa de Projectistas e Consultores | ||||||||||||
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 | GECoRPA Grémio das Empresas de Conservação e Restauro do Património Arquitectónico | 
 | ASTM American Society for Testing and Materials | ||||||||||||
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 | CIB International Council for Research and Innovation in Building and Construction | |||||||||