Water quality Short stories, Spanish American Economic aspects Agriculture Population Sanitary landfills Free trade Groundwater History History and criticism Hydrogeology Spanish American fiction Analysis Chilean poetry Differential geometry {For differential topology, see 57Rxx. For foundational questions of differentiable manifolds, see 58Axx} -- Global differential geometry [See also 51H25, 58-XX; for related bund Differential geometry {For differential topology, see 57Rxx. For foundational questions of differentiable manifolds, see 58Axx} -- Symplectic geometry, contact geometry [See also 37Jxx, 70Gxx, 70Hxx] Economic integration Global differential geometry Modernism (Literature) Ricci flow Saline waters Salinity Agricultural laborers Agriculture and state Aquifers Computer logic Computer software Criticism and interpretation Economic conditions Economic development