Methods (3) Data envelopment analysis (3) Reference groups (3) Powders (3) Grain (3) Forests and forestry (3) Executives (3) Average (3) Methods (3) Management (3) Technology (3) Cameroun (2) Doors (2) Employment (2) Stored-value cards (2) Money--European Union countries (2) Sports records (2) Small business (2) Production (Economic theory) (2) Oil well logging (2) Money--European Economic Community countries (2) Licenses (2) Athletic ability (2) Arboriculture (2) Technique (2) Valuation (2) Rating of (2) Occupations (2) Evaluation (2) Análisis envolvente de datos (2)