00495nam a2200157Ia 4500003000900000008004100009020000700050040001600057080001400073110003000087245012800117260002000245300001400265650004100279650001700320IN-BaIIA211028s9999    xx            000 0 eng d  aNO  cIIA Library  a1:12bCSI  aCalcutta National Library 0aIndian Scientific and Technical Publications, Exhibition 1960cCalcutta National Library                                     aNew Delhic1960  axii,195p.  aAstronomy and Astrophysics Thesaurus  aBibliography