000 00285nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aJames D.Ebert
245 0 _aInteractions system in development
260 _bHolt Rinehart
260 _c1970
365 _b39.38
942 _cBK
999 _c199679
_d199679