000 00438nam a2200157 4500
003 OSt
008 220602b |||||||| |||| 00| 0 eng d
020 _a9559597361v
082 _a530.8
_bNAT
110 _915016
_aNational Institute of Education
245 _aභෞතික රාශි හා මාන
260 _aNIE,
_b1997.
_cMaharagama :
300 _avi,46p.;
_bill.;
_c20cm
650 0 _912804
_aMathematics
942 _2ddc
_n
_cLM
999 _c84347
_d84347