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Are you Jonathan O'Brien, author of the books below?
The Category Management in Purchasing by Jonathan O'Brien Supplier Relationship Management by Jonathan O'Brien Negotiation for Purchasing Professionals by Jonathan O'Brien Negotiation for Procurement Professionals by Jonathan O'Brien The Buyer's Toolkit by Jonathan O'Brien Sustainable Procurement by Jonathan O'Brien Supplier Relationship Management by Jonathan O'Brien Negotiation for Procurement and Supply Chain Professionals by Jonathan O'Brien


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