THE ACQUISITION OF CONSERVATION OF SUBSTANCE AND WEIGHT IN CHILDREN: II.External reinforcement of conservation of weight and of the operations of addition and subtraction

✍ Scribed by Jan Smedslund

• Book ID: 115220110
• Publisher: John Wiley and Sons
• Year: 1961
• Tongue: English
• Weight: 817 KB
• Volume: 2
• Category: Article
• ISSN: 0036-5564
• DOI: 10.1111/j.1467-9450.1961.tb01223.x