Concepts (2) Ability (2) Conceptos (2) Aptitudes (2) Labor (1) Intertextuality (1) Writing (1) Trials (1) Reasoning (1) Reason (1) Production (Economic theory) (1) Interest (1) Fountains (1) Essay (1) Chemical elements (1) Building (1) Books and reading (1) Intertextualidad (1) Tesis (1) Interés (1) Razón (1) Fuentes (1) Ensayo (1) Datos (1) Procesos (1) Información (1) Raciocinio (1) Producción (1) Elementos químicos (1) Construcción (1)