00369nam a2200157Ia 4500008004000000041000800040082001100048100001900059245003900078260004200117300000800159650001100167650001200178650001000190650001100200210210b1929   xxu||||| |||| 00| 0 eng d  aeng  a538/60  aWELD (Leroy D)  aTheory of errors and least squares  aNew YorkbThe Macmillan Companyc1929  a190  aTheory  asquares  aleast  aerrors