Weights and measures (1) Students (1) Sex (Biology) (1) School children (1) Psychology (1) Private schools (1) Measurement (1) Life (1) Factor analysis (1) Análisis factorial (1) Vida (1) Peruanos (1) Estudiantes (1) Enseñanza privada (1) Escolares (1) Pesos y medidas (1) Sexo (1) Medición (1) Psicología (1)