Gravity. Telegraphic determination of force of gravity at Baltimore, from simultaneous pendulum observations at Washington and Baltimore, by E. D. Preston; app. 2 from report, 1894 [pt. 2].
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Gravity. Telegraphic determination of force of gravity at Baltimore, from simultaneous pendulum observations at Washington and Baltimore, by E. D. Preston; app. 2 from report, 1894 [pt. 2].
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Gravity. Telegraphic determination of force of gravity at Baltimore, from simultaneous pendulum observations at Washington and Baltimore, by E. D. Preston; app. 2 from report, 1894 [pt. 2].