Note 75 — DEVELOPMENT OF GRAVITY PENDULUMS IN THE 19th CENTURY
Reading edition
Report of the Superintendent of the U.S. Coast and Geodetic Survey for 1889-90 (Washington, 1891), app. no. 12.
Reading edition
Report of the Superintendent of the U.S. Coast and Geodetic Survey for 1889-90 (Washington, 1891), app. no. 12.