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Armstrong g. Kotler Ph. Marketing: An Introduction, Pearson, Harlow 2009. Blythe j. Essentials of Marketing, Prentice Hall, Harlow 2005. Doligalski t. Internet w.
Armstrong g. Kotler Ph. Marketing: An Introduction, Pearson, Harlow 2009. Blythe j. Essentials of Marketing, Prentice Hall, Harlow 2005. Doligalski t. Internet w.