000 00267nam a2200121Ia 4500
008 220201s1960 xx 000 0 eng d
082 _a380
_bBEE
100 _aBEECHENO,HO.
245 0 _aPrinciple and Practice of Concept
260 _c1960
300 _a688
942 _2ddc
999 _c55
_d55