000 00277nam a2200133Ia 4500
008 161121s9999 xx 000 0 und d
100 _aHall (A.)
245 0 _aTechnique of field experimetns
260 _cNIL
365 _b0
650 _aNIL
652 _a#N/A
942 _cBK
999 _c8537
_d8537