ISBN 0813809339 books & textbook
Christiaan Huygens' the Pendulum Clock or Geometrical Demonstrations Concerning the Motion of Pendula As Applied to Clocks
Huygens, Christiaan Blackwell, Richard J.
Iowa State Pr /1986-01-01 Hardcover
isbn-10: 0813809339 / isbn-13: 9780813809335
