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“Trust in God – But Tie Your Camel First.” The Economic Organization Of The Trans-Saharan Slave Trade Between The Fourteenth and Nineteenth Centuries
Prange, Sebastian, (2005)
Adpuls in continuous time
Luhmer, Alfred, (1986)
Learning from Winners : how the ARF David Ogilvy Award Winners use market research to create advertising success
Pettit, Raymond C., (2008)