000 00412nam a22001337a 4500
008 160414b xsy||||| |||| 00| 0 eng d
082 _a504
100 1 _agemmill paul .
_941877
245 1 _aEconomic principles and problems\
_cpaul gemmill.
260 _awashington:
_bwar department education manual,
_c1937.
300 _a522p;
_c26cm.
650 _anatural sciences and mathematics.
_926856
942 _2ddc
_cBK
999 _c298712
_d298712