000 00274nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aPROCEEDINGS DSA
245 0 _aFuture production and productivity in li
260 _cNIL
365 _b0
650 _aNIL
942 _cBK
999 _c94218
_d94218