机构:
Leopold Ctr Sustainable Agr, Ames, IA 50011 USA
Iowa State Univ, Ames, IA 50011 USA
Board Stone Barns Ctr Food & Agr, New York, NY USA
3703 Woodland St, Ames, IA 3703 USALeopold Ctr Sustainable Agr, Ames, IA 50011 USA
机构:
Utah State Univ, Dept Econ & Finance, Jon M Huntsman Sch Business, Logan, UT 84322 USA
NBER, Cambridge, MA 02138 USAUtah State Univ, Dept Econ & Finance, Jon M Huntsman Sch Business, Logan, UT 84322 USA