12 books found
Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415]
by Philadelphia (Pa.). Mayor
1908
by Philadelphia (Pa.). Mayor
1908
by Philadelphia Drexel inst. of technol, graduate sch. of libr. sci
1904
by Special Libraries Council of Philadelphia and Vicinity
1923