@book{bhlitem63407, title = {Problems of rotary motion presented by the gyroscope, the precession of the equinoxes, and the pendulum }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/63407}, note = {https://www.biodiversitylibrary.org/bibliography/22711}, publisher = {Washington, Smithsonian Institution, 1873}, author = {Barnard, J. G. (John Gross),}, year = {}, pages = {90}, keywords = {Earth|Gyroscopes|Mechanics|Nutation|Pendulum|Precession|Rotation}, }