Электронная книга

Development of Gravity Pendulums in the 19th Century: Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966

Электронная книга

Development of Gravity Pendulums in the 19th Century: Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966