I have added some old but good papers under 'Solder......'. You can see
them by the last uploading date, which is today .
One title is very good for someone who wants  learn about soldering flux:
"Fluxes for Soldering and Their Future Prospects "

Under *Coatings' a short work "Stripping and Replacement of Damaged
Solderable Coatings!

Inge


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