| Description | 9 leaflets - in folder - John Betts Refiners Ltd.
1/9. Recovering Silver - From Non Destructive Testing Sources.
2/9. Recovering Silver - From Newspaper And Printing Sources.
3/9. Recovering Silver - From Medical Sources.
4/9. Recovering Silver - From Jewellery Sources.
5/9. Recovering Silver - From Jewellery Sources. (duplicate)
6/9. Recovering Silver - From Medical Sources. (duplicate)
7/9. Recovering Silver - From Photofinishing Process.
8/9. Recovering Silver - From Newspaper And Printing Sources. (duplicate).
9/9. Recovering Silver - From Non Destructive Testing Sources. (duplicate). |