Valuable secrets concerning arts and trades, or, Approved directions, from the best artists, for the various methods of engraving on brass, copper or steel [microform].
Dossie, Robert,-1777.
Norwich [Conn.] : Printed by Thomas Hubbard,
1795.
Sabin 98399.
Sabin Unit 145.
LIT-138.
Microfiche.
Trade secrets
Industrial arts