000 00282nam a2200133Ia 4500
008 230321s9999 xx 000 0 und d
082 _a658.8
_bGUP
100 _aGupta,S.L
245 0 _aService Marketing
250 _a1st
260 _bScholar
_c2019
300 _a---
942 _cBB
999 _c6075
_d6075