Abstract of His Majesty's royal letters patent. George R. ... Whereas, R. Darby and Co. have, with much labour and study, invented a portable instrument for detecting frauds by counterfeit gold

Verfasser / Beitragende:
R. Darby and Co
Ort, Verlag, Jahr:
[S.l.] : [s.n.], 1753
Beschreibung:
1 online resource
Format:
Buch (online)
ID: 594523524