History 164 Methodist Church 120 Agriculture 87 Religious aspects 77 Study and teaching 57 Soils 54 Education 45 más ... Diseases and pests 44 Christianity 41 Diseases 36 Forests and forestry 34 Environmental aspects 32 Cattle 30 Economic aspects 28 Lay ministry 27 Parks 27 Criticism, interpretation, etc 26 Plants 25 Analysis 24 Criticism and interpretation 24 Agricultural education 23 Clergy 22 Missions 21 Religion 21 Breeding 20 Growth 20 History and criticism 20 Dogs 19 Feeding and feeds 19 Forest management 19 menos ...