TY - BOOK AU - Barnard,J.G. TI - On the internal structure of the earth: considered as affecting the phenomena of precession and nutation, supplementary to article under the above head, Smithsonian contributions to knowledge, vol. XIX, no. 240 being the third of the problems of rotary motion T2 - Smithsonian contributions to knowledge. [vol. XXIII, art. 4] AV - Q11 .S68 vol. 23 PY - 1877///] CY - [Washington PB - Smithsonian Institution KW - Astronomy KW - Precession KW - Nutation KW - Earth (Planet) KW - Internal structure ER -