Dramatic production (1) Parts (1) Assaying (1) Terms and phrases (1) Terms and phrases (1) Parts (1) Event history analysis (1) Volume (Cubic content) (1) Vocation (1) Telephone (1) Social structure (1) Service industries (1) Production (Economic theory) (1) Generosity (1) Etiquette (1) Conversation (1) Commercial products (1) Authors (1) Communication--Technological innovations (1) Research (1) Analysis (1) Influence (1) Social life and customs (1) Names (1) Processing (1) Vocación (1) Estructura social (1) Generosidad (1) Conversación (1) Empresas de servicios (1)