A study of the nature of difficulty
Title:
A study of the nature of difficulty
Author:
Orleans, Jacob S. (Jacob Samuel), 1899-
Personal Author:
Publication Information:
New York city : Teachers college, Columbia university, 1926.
Physical Description:
v, 39 pages ; 24 cm.
General Note:
Published also as thesis (Ph.D.) Columbia university, 1926.
Language:
English
Format :
Book