"Electronic data interchange United States." . . "Electronic commerce United States." . . . . . . . . "Digital economy" . . . . . . "Case studies"@en . . . . . "The emerging digital economy" . "The Emerging digital economy"@en . "The Emerging digital economy" . . "The emerging digital economy"@en . . . . . . "The digital revolution; Building out the internet; Electronic commerce between bisiness; Digital delivery of goods and services; Retail sale of tangible goods; Consumers in the digital age; Workers in the digital age; Challenges ahead." . . . . . . . . . . . . . . "Electronic funds transfer United States." . .