5 books found
by Philadelphia (Pa.). Water Dept
1854
by Philadelphia (Pa.). Water Department
1876
by Philadelphia (Pa.) Bureau of Water
1888
by Philadelphia (Pa.)
1873
by Franklin Institute (Philadelphia, Pa.)
1884
Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59. Cf. Index to v. 1-120 of the Journal, p. [415]