Deterioration rates

I'm writing one manual about libraries and archives conservation,
and I need deterioration tables specifying deterioration rates for
non-printed materials (i.e. CD's, photocopies, thermofax papers,
audio, video, etc) to compare with other printed materials
(rag-paper, mechanical pulp paper, etc). Does anyone have work on
this matters? Citations would be well received,

Arsenio Sanchez
Laboratorio de Restauracion
Biblioteca Nacional
Spain

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                  Conservation DistList Instance 12:17
                Distributed: Wednesday, August 12, 1998
                       Message Id: cdl-12-17-009
                                  ***