000 00435nam a22001457a 4500
008 160504b xsy||||| |||| 00| 0 eng d
082 _a504
110 1 _awar department education.
_954594
245 1 _areview arithmetic\
260 _awashington:
_bwar department education,
_c1944.
300 _a214p;
_c24cm.
650 _anatural sciences and mathematics.
_926856
710 _awar department education.
_954595
942 _2ddc
_cBK
999 _c308481
_d308481