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Zur Ökonomik der Produktion von Managementinformationen
Welzmiller, Steffen, (1999)
Telecomunications for the executive
Thomas, Ronald R., (1984)
Communication for management and business
Sigband, Norman B., (1982)
Renationalisation of the common agricultural policy
Wilkinson, Alan, (1994)
A survey of some Western European experiments in motivation
Wilkinson, Alan, (1970)