Ruggles, S. B. (1864). Reports: As delegate to the International Statistical Congress at Berlin on the resources of the United States, and on a uniform system of weights &c. Albany.

Ruggles, Samuel B. Reports: As Delegate to the International Statistical Congress At Berlin On the Resources of the United States, and On a Uniform System of Weights &c. Albany, 1864.

Ruggles, Samuel B. Reports: As Delegate to the International Statistical Congress At Berlin On the Resources of the United States, and On a Uniform System of Weights &c. Albany, 1864.