Parallel chapters from the first and second editions of An essay on the principle of population, 1798, 1803 /

Includes reproductions of original title-pages.

The first lines of the theory and practice of surgery : including the principle operations /

Mode of access: Internet.

Royalty payments : hearings before the Committee on Patents, House of Representatives, seventy-seventh Congress, first session, on H.J. Res. 32, H.J. Res. 73 and H.J. Res. 123, joint resolutions to define the principle of international reciprocity in the protection of American patents, trade-marks, secret formulas and processes, and copyrights by providing a method for assuring the payments of amounts due to persons in the United States from users thereof in countries restricting international payments from their territories /

"317522."

A description of Ithiel Town's improvement in the principle, construction, and practical execution of bridges, for roads, railroads, and aqueducts ... also critical remarks ... with practical and scientific remarks and observations.

Binder's title: Improvement in bridges.