puits (1) enquête (1) recherche (1) mesure (méthode analytique) (1) champ (1) évolution (1) éducation (1) Education (1) Methods (1) Standardization (1) Research (1) Measurement (1) Manufacturers' agents (1) Investigations (1) Evolution (1) Evaluation (1) Education (1) Commission merchants (1) College students (1) Tax assessment (1) Methods (1) Research (1) Standardization (1) Evolution (1)