Law of energy, from 1924, issued in Bucharest. This document is almost 100 years old.
how do they keep such a document for a long time, even the paper seems not dirty and still very good. not easy maintenance.
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Books and paper in general must be respected, so dirty books and papers is not an option in my opinion. I can't respect people who crumple books or magazines. I have a thing for paper and it annoys me like hell, when I see such things.