Équateur (3) Research (3) Investigación (3) Labor (2) Statistics (2) Methodology (2) Evaluation (2) Evaluación (2) Estudio (2) Estadística (2) Metodología (2) Trabajo (2) statistique (2) Educational leadership (1) Employees (1) World history (1) Water--Pollution (1) Vision (1) Time (1) Thought and thinking (1) Textile industry (1) Students (1) Sewage (1) Republics (1) Refuse and refuse disposal (1) Reason (1) Reality (1) Production (Economic theory) (1) Perspective (1) Organic wastes (1)