Take three and pay for only two with coupon TRIPLEEN Second-hand books by Billy L. White from £10.77 | HamelynBilly L. White dedicated his career to in-depth research on child development. He is the author of the seminal work The first three years of life. His work has been essential for understanding developmental psychology in early childhood. Throughout his career, he has published a total of 27 specialized works. His academic focus was closely linked to the prestigious Harvard Preschool Project. Buy 3: 50% off the 3rd with TRIPLEEN50 
