administracao appliedpsychology bedrijfsleven business collectivebargaining communicationinterpersonnelle conflict(psychology) conflictmanagement contratscollectifs développementd'aptitudes gestiondesconflits industrialrelations interpersonalcommunication interpersonalekommunikation interpersonalrelations kommunikationstraining laborunions lawenforcement managementdevelopment manuals negociofiduciario negotiating negotiation negotiationinbusiness nonfiction négociation négociations(affaires) négociationscollectives onderhandelen politicalfreedom politicalscience psychologicalconflict psychologiedutravail relationsindustrielles réunions security sozialerkonsens syndicats trade-unions unitedstates verhandlung verhandlungstechnik