Schultz, Henry. The theory and measurement of demand - Chicago : The University of Chicago Press, 1966 (c.1938) - 817 p. LCCN: 56944 Subjects--Topical Terms: Agricultura--Aspectos económicos.Consumo.Oferta y demanda.Productos agrÃcolas--Precios. Dewey Class. No.: 338.13 / S24