Derecho 277 Derecho Público y Administrativo 220 Law 157 Derecho Civil 145 Law|Law in general. Comparative and uniform law. Jurisprudence |Periodicals 128 Derecho Internacional 117 Derecho Mercantil y de la Empresa 114 Mathematics|Science|Sciences 102 Business|Business and Economics|Commerce|Economics|Social Sciences 92 Philosophy, Psychology, Religion|Psychology 91 Derecho Constitucional 88 Derecho Penal 86 Health & Medicine (General)|Medicine|Medicine and Health Sciences 72 Economía y negocios 65 Engineering|Engineering (General). Civil engineering (General)|Engineering and Technology|Technology 62 Ciencias sociales 59 Derecho Laboral y Seguridad Social 54 Physics|Science|Sciences 54 Economía 52 Behavioral Sciences|Medicine and Health Sciences|Philosophy, Psychology, Religion|Psychology 49 Political Science|Political Science & Studies|Political science (General) 48 Chemistry|Science|Sciences 47 Derecho Fiscal 47 Medicine|Medicine and Health Sciences|Nursing 47 Internal medicine|Medicine|Medicine and Health Sciences|Neurosciences. Biological psychiatry. Neuropsychiatry|Psychiatry 45 Medical Sciences|Medicine|Medicine (General)|Medicine and Health Sciences 40 Internal medicine|Medicine|Medicine and Health Sciences 39 Fine Arts and Music|Literature on music|Music|Music and books on music 38 Biology and Life Sciences|Botany|Science|Sciences 37 Derecho civil 37