Frans X. Plooij

1946

• Oje, ich wachse!
• Oei, ik groei!
• Oje, ich wachse!
• The behavioral development of free-living chimpanzee babies and infants
• The Wonder Weeks
• The Wonder Weeks: A Stress-Free Guide to Your Baby's Behavior (6th Edition)
• The Wonder Weeks: How to Stimulate Your Baby's Mental Development and Help Him Turn His 10 Predictable, Great, Fussy Phases into Magical Leaps Forward