00353nam a2200145Ia 4500003000500000008004100005020000900046040000900055041001200064082002100076100002900097245005600126260000900182650001600191NDCL180829s9999||||ii |||||||||||||| ||eng||  a6484  aNDCL  aEnglish  a520 CPC216th ed  aChaudhuri, Pares Chandra 0aElementry modern astronomycPares Chandra Chaudhuri  c1960  aMathematics