Madrid (2) Estudio (2) Labor (1) Evolution (Biology) (1) Telephone surveys (1) Surveys (1) Statistics (1) Sociology (1) Science (1) Public libraries (1) Musicals (1) Musical form (1) Methodology (1) Libraries (1) Interviews (1) Indexes (1) Fees, Administrative (1) Communities (1) Capital (1) Encuestas telefónicas (1) Manifiesto (1) Tasas (1) Catálogo (1) Factores (1) Tipología documental (1) Encuestas (1) Índices (1) Ciencias (1) Entrevistas (1) Datos (1)