In humid environments, dampness can be controlled by sprinkling a little talcum powder on each page, putting weight on the book for a few days, and then removing the powder with a brush.
Lai pasargātu grāmatu no mitruma, tās lapas pārkaisa ar talku, vairākas dienas patur grāmatu zem sloga un tad noslauka talku ar birstīti.