00521nam a2200157Ia 4500003000900000008004100009040001600050080001700066245010600083260003700189300001600226500002600242650002800268650004100296700002600337IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a520.2bING-3 0aAmateur telescope makingbbook threecedited by Albert G. Ingalls                                      aU S AbScientific Americanc1974  aviii, 646p.  aDonated by Mrs. Bappu  aAstronomical Telescopes  aAstronomy and Astrophysics Thesaurus  aIngalls, Albert G. ed