When Did Americans Stop Marrying Their Cousins? Ask the World’s Largest Family Tree - The New York Times
Sat Mar 3 22:48:09 2018 - permalink -

- https://mobile.nytimes.com/2018/03/01/science/cousins-marriage-family-tree.html?rref=collection%2Fsectioncollection%2Fscience&action=click&contentCollection=science&region=rank&module=package&version=highlights&contentPlacement=1&pgtype=sectionfront&referer=