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factor humano
el.	human factor
factores humanos
polit.	human factors; human factors The study of human beings and their interaction with products, environments and equipment in performing tasks and activities. Objectives are to maximize human and system efficiency and human well-being and quality of life (El estudio de los seres humanos y de su interacción con productos, medio ambiente y equipos al realizar tareas y actividades)

factor humano : 7 phrases in 4 subjects

Coal	2
Environment	2
Natural sciences	1
Transport	2