000 00291nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _a"Hamblin (Robert L), etc"
245 0 _aMathemakical theory of srcial change
260 _bWilety
260 _c1973
365 _b138.77
942 _cBK
999 _c201478
_d201478