Keeping It Clean
Metallic stains on acid- sensitive masonry should be removed using an alkaline salt of the appropriate acid (for example, ammonium oxalate to remove rust stains ). Metal compounds are responsible for a great number of stains on historicanbsp;...
| Title | : | Keeping It Clean |
| Author | : | Anne E. Grimmer |
| Publisher | : | DIANE Publishing - 1992-06-01 |
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