Wyniki
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E-consumers attitudes towards payment for internet services in Poland
Leszek Gracz
Service Management 9 (2012) s. 49-60 -
Opt-in and double opt-in as ways for enhancing e-mail communication of a service firm
Leszek Gracz
Service Management 1 (2007) s. 81-88 -
Main methods and areas of Internet marketing in services
Leszek Gracz
Service Management 4 (2009) s. 61-66