Nature And Nurture During Infancy And Early ChildhoodRobert Plomin, John C. DeFries, David W. Fulker · First published 2006Open the Tome
Nature and Nurture During Middle ChildhoodJohn C. Defries, David W. Fulker · First published 1994Open the Tome
The Colorado adoption projectJ. C. DeFries, Robert Plomin, David W. Fulker, Radcliffe College. Henry A. Murray Research Center · First published 1976Open the Tome
