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Ayres, J. Marx and Druzik, James and Haiad , J. Carlos and Lau, Henry and Weintraub, Steven (1989) Energy conservation and climate control in museums: A cost simulation under various outdoor climates. Museum Management and Curatorship, 8. pp. 299-312.

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Marstein, N and Stein, M (1989) Climatic conditions in medieval churches. Deterioration due to central heating. In: Building Conservation 88 Symposium. Helsinki, 22-26 August 1988. Report. Finnish National Commission for UNESCO , pp. 245-247. ISBN 951-47-2907-2