المؤلفون: Hildreth, R.J., Bentley, Orville G., Johnson, Glenn L., Tweeten, Luther, Mellor, John W., Bromley, Daniel W., Pope, Rulon D., Leman, Christopher K., Paarlberg, Robert L., King, R.P., Sonka

المصدر: American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association), 1985 Annual Meeting, August 4-7, Ames, Iowa.

الإتاحة: https://ideas.repec.org/p/ags/aaea85/278707.html