the paper, which isn't named in the wapo article, is 'cereals appropriability and hierarchy' here http://economics.mit.edu/files/10771 http://economics.mit.edu/

the paper, which isn't named in the wapo article, is 'cereals appropriability and hierarchy' here http://economics.mit.edu/files/10771 http://economics.mit.edu/files/10771. The 'anthropological database' the wapo article describes is murdock's ethnographic atlas from 1967 and a geocoded 2013 derivative by fenske.