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

• मुख्य लेखक: Lenzen, Victor F. (Victor Fritz), 1890-1975; Multhauf, Robert P., 1919-2004
• स्वरूप: पुस्तक
• भाषा: अज्ञात या अवैध भाषा
• प्रकाशित: 1/21/11
• विषय: Pendulum
• ऑनलाइन पहुंच: https://www.gutenberg.org/ebooks/35024