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En los años 40 se desarrolló Grupos de enfoque de bajo liderazgo Selección al azar de muestras Avances en la técnica de muestreo Prueba de producto a consumidores (jan 1, 1940 – jan 2, 1940)
Added to timeline:
linea de tiempo gerson alvarado
By
gerson alvarado
6 Oct 2019
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Date:
jan 1, 1940
jan 2, 1940
~ 24 hours
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