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040			_aMAIN
041			_aEnglish
082			_a001.42 � _bEIS-19
100			_aEisend, Martin
245		0	_aResearch methodology in marketing: theory development, empirical approaches and philosophy of science considerations
260			_bSpringer _aSwitzerland _c2019
942			_cBK
999			_c21142 _d21142