https://sb2019.samweber.biz/story.php?title=human-hair-wigscheap-wigs-human-hair-2443-%7C-jobref-arbeitszeugnisse-easy Evidence of early marketing segmentation has also been noted elsewhere in Europe. A study of the German book trade found examples of both product differentiation and market segmentation in the 1820s. Mon, 07 Oct 2019 01:57:43 UTC en