Itó, Junichi. Dynamic model of investment behavior of farms : an application of optimal control theory - Nishigahara : National Research Institute of Agricultural Economics, 1991 - 25 p. ; gráf - Research paper ; 8 . - Research paper ; 8 . D54-20 LCCN: 4642 Subjects--Topical Terms: Agricultura--Costos.Inversiones.