Case studies 47 History 37 Oils and fats 29 Publicaciones periódicas 20 Social aspects 20 Periodicals 19 Aceites y grasas 18 more ... Estudio de casos 17 History and criticism 17 Estudios de caso 14 Cats 13 Education 13 Social conditions 13 Economic conditions 12 Politics and government 12 Psychology 12 Dogs 11 Educación 11 Philosophy 10 Forage plants 9 Forraje 9 Gatos 9 Pastures 9 Study and teaching 9 Cases 8 Diseases 8 Economic aspects 8 Historia 8 Industrial management 8 Perros 8 less ...