000 002980000a22001330004500
245 _aAlgebraic systems
100 _aCrouch, Ralph
100 _aBeckman, David
260 _aGlenview
_bScott, Foresman and Co.
_c1966
300 _a304p.
080 _a519.4
_bC7
041 _aEN
942 _cBK
999 _c93118
_d93118