000 00407nam a22001337a 4500
008 160418b xSY||||| |||| 00| 0 eng d
082 _a504
110 _aWORK DEPARMENT EDUCATION MANUAL
_941999
245 1 2 _aAMERICAN ECONMIC PROBLEMS/
260 _aWASHINGTON:
_bWAR DEPARTEMENT EDUCATION MANUAL,
_c1941.
300 _a632P;
_c26CM
650 _anatural sciences and mathematics/
_926856
942 _2ddc
_cBK
999 _c298813
_d298813