TY  - SER
AU  -  Thorndike, Edward L. 
TI  -  The Psychology of Arithmetic 
AV  - QA 
PY  - 2012///
PB  -  Project Gutenberg, 
KW  -  Arithmetic -- Study and teaching
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/39300
ER  -