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Consumers
Roberts, Eirlys, (1966)
(2018)
Consumers' Coöperation
Brainerd, John G., (1937)
Die Kunst, Kunden zu begeistern : neun Erfolgsfaktoren für Service der Extraklasse
Berry, Leonard L., (2000)
Retail positioning strategies for the 1980s
Berry, Leonard L., (1982)
The best companies are generous companies
Berry, Leonard L., (2007)