Preventive conservation

g.3.1
External degradation agent
g.32
Document degradation
g.33
Treatment of a book affected by microorganisms
g.34
Condition of the books of minutes in the deposit
g.35
Horizontal chests of drawers to keep plans
g.36
Protective covers with conservation materials
g.37
Encapsulated for conservation for large formats
g.38
Control and regulation of the environment in the deposits
g.39
Restoration of a book of minutes from 1877
g.310
Document restoration task