00515nam a2200169Ia 4500003000900000008004100009040001600050080001500066100001800081245009600099260003500195300001000230490003100240650004100271650001800312650001500330IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a520.2bBAI  aBailey, K. V. 0aTelescopes and observatoriescK. V. Bailey                                                   aLondonbFrederick Mullerc1960  a144p.  aThe mechanical age library  aAstronomy and astrophysics thesaurus  aObservatories  aTelescopes