Centre (2) Economic conditions (2) Deterioration (2) Family relationships (2) Employment (2) Terms and phrases (2) Terms and phrases (2) Workweek (2) Yarn (2) Weekly rest-day (2) Time (2) Thread (2) Social participation (2) Social history (2) Scientists (2) Quality of life (2) Production (Economic theory) (2) Postal service (2) Oral examinations (2) Night (2) Lifestyles (2) Ladders (2) Working class (2) Informal sector (Economics) (2) Humanity (2) Human engineering (2) Gaze (2) Fatigue (2) Experience (2) Evidence (2)