00689nam a2200193Ia 4500003000900000008004100009020001800050040001600068080001500084100003000099245009600129260005900225300002300284650003400307650004100341942000700382999001500389952009100404IN-BaIIA211028s9999    xx            000 0 eng d  a0-87169-674-6  cIIA Library  a520.2bVAN  aVan Helden, Albert911108 4aThe invention of the telescopecAlbert Van Helden                                            aPhiladelphiabThe American Philosophical Societyc1977  a[various pagings.]  aAstronomical telescopes92016  aAstronomy and astrophysics thesaurus  cBK  c6476d6476  00104070aBANbBANcGENd1980-03-31l0o520.2/ VANp7208r2021-11-05w1980-03-31yBK