James Heckman je aseoro-okowo to gba Ebun Nobel ninu ??r??-okowo .
? le f?? ju bayii l? tabi ki ? ?atun?e r?? l??na ti yio mu kunr??r??. ? ran Wikipedia l??w?? lati f???? ju bayii l? .
Complete roster
James Joseph Heckman (2009)
