Child Development. the Cambridge Encyclopedia OfRonald G. Barr, Philippe Rochat, George F. Michel, Brian Hopkins · First published 2005Open the Tome
The Cambridge Encyclopedia of child developmentB. Hopkins, Ronald G. Barr · First published 2005Open the Tome
The Cambridge encyclopedia of child developmentRonald G. Barr, George F. Michel, Philippe Rochat · First published 2005Open the Tome
New evidence on unexplained early infant cryingRonald G. Barr, Ian St. James-Roberts, Maureen Ruth Keefe · First published 2001Open the Tome
Crying as a sign, a symptom, & a signalRonald G. Barr, B. Hopkins, James A. Green · First published 2000Open the Tome
Challenges to developmental paradigmsPhilip R. Zelazo, Ronald G. Barr · First published 1989Open the Tome
