00502nam a2200157Ia 4500003000900000008004100009040001600050080001600066100001900082245011900101260004300220300001500263650001400278650004100292650001100333IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a523.44bWIL  aWilliams, K. P 4aThe calculations of the orbits of asteroids and cometscK. P. Williams                                              aBloomingtonbThe Principia Pressc1934  avii, 214p.  aAsteroids  aAstronomy and astrophysics thesaurus  aComets