foxing ☜☞ foxing (oxidación)
Foxing refers specifically to a reddish-brown, small circular stain, probably from minute pieces of iron in paper that has been attacked by mildew or mold. Larger, more-irregularly shaped brown stains may be caused by mold growing on the paper, due to poor storage conditions. [CB]
see also: stains / discoloration
see also: stains / discoloration