Quizá quiso decir: Social Indicators Research Series, 1387-6570 ; 25 Social Indicators Research Series, 1387-6570 ; 26 Social Indicators Research Series, 1387-6570 ; 27 Social Indicators Research Series, 1387-6570 ; 28 Social Indicators Research Series, 1387-6570 ; 29 Social Indicators Research Series, 1387-6570 ; 30 Social Indicators Research Series, 1387-6570 ; 31 Social Indicators Research Series, 1387-6570 ; 32 Social Indicators Research Series, 1387-6570 ; 34 Social Indicators Research Series, 1387-6570 ; 35 Social Indicators Research Series, 1387-6570 ; 33 Social Indicators Research Series, 1387-6570 ; 37 Social Indicators Research Series, 1387-6570 ; 38 Social Indicators Research Series, 1387-6570 ; 39 Social Indicators Research Series, 1387-6570 ; 42 Social Indicators Research Series, 1387-6570 ; 41 Social Indicators Research Series, 1387-6570 ; 43 Social Indicators Research Series, 1387-6570 ; 45 Social Indicators Research Series, 1387-6570 ; 46 Social Indicators Research Series, 1387-6570 ; 47