Costs (1) Assaying (1) Communication (1) Stored-value cards (1) Money--European Union countries (1) White collar workers (1) Transaction costs (1) Tools (1) Time (1) Sports records (1) Small business (1) Revenge (1) Profit (1) Money--European Economic Community countries (1) Investments (1) Informers (1) Ignorance (Theory of knowledge) (1) Future life (1) Foreign exchange (1) Flight (1) Chronology, Historical (1) Causation (1) Athletic ability (1) Communication--Technological innovations (1) Use studies (1) Use studies (1) Analysis (1) Influence (1) Processing (1) Vuelo (1)