00488nam a2200157Ia 4500003000900000008004100009040001600050080001500066100002100081245009800102260003100200300001000231650004100241650001500282650003300297IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a520.2bLEA  aLearner, Richard 0aAstronomy through the telescopecRichard Learner                                               aLondonbHarrow housec1981  a224p.  aAstronomy and astrophysics thesaurus  aTelescopes  aTelescopes - instrumentation