Agriculture History 8 Economic aspects 3 Botany 2 Islam and science 2 Land tenure 2 Land use, Rural 2 Mais ... Natural history 2 Science 2 Science, Medieval 2 Agricultural productivity 1 Agriculture and state 1 Basque 1 Country life 1 Dialects 1 Economic conditions 1 Economic history 1 Effect of exploitation on 1 Exploitation 1 Finance, Public 1 Fiscal policy 1 Foreign elements 1 Land use 1 Orange industry 1 Poultry industry 1 Public domain 1 Right of property 1 Rural conditions 1 Spanish language 1 Swine 1 menos ...