000 00404nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a513
_bW181
100 _aWalker Robert
245 _aEssentials of arithmetic
_ba manual for teachers
260 _aLondon
_bGeorge G Harrap & Company
_c1929
300 _a378p.
650 _aArithmetic
942 _cBK
999 _c50908
_d50908