Proceedings and addresses. Celebration of the beginning of the second century of the American patent system at Washington City, D.C. April 8, 9, 10, 1891
A congress of inventors and manufacturers of inventions "Papers upon U.S. Patent office topics:" p. [453]-483
Do you want to exchange books? It’s EASY!
Get registered and find other users who want to give their favourite books to good hands!
