Unfortunate for the dollar, the booklet
"making profit from the chemistry
of precious metals in the scrapyard"
now sells for $7 (instead of $5)
other from me:
Explaining the use of stannous chloride - $7
"Gold electronic enigma 1, 2 or 3"
A look inside the electronic shell of noble metals - $14
"making profit from the chemistry
of precious metals in the scrapyard"
now sells for $7 (instead of $5)
other from me:
Explaining the use of stannous chloride - $7
"Gold electronic enigma 1, 2 or 3"
A look inside the electronic shell of noble metals - $14
