LEADER 00000cam  2200000   4500 
001    1878750 
008    751206s1949    ncua     b    00010 eng   
010    49009408 
040    DLC|cFQG|dm.c.|dSER|dTXU 
049    TXUM[52622]  
050  4 QA115|b.B86 
100 1  Brownell, William A.|q(William Arthur),|d1895-1977. 
245 10 Meaningful vs. mechanical learning;|ba study in grade III 
       subtraction by William A. Brownell and Harold E. Moser,
       |cwith the assistance of Samuel L. Abbot, Jr. [and others]
260    Durham, N.C.,|bDuke Univ. Press,|c1949. 
300    xvi, 207 p.|bdiagrs.|c24 cm. 
440  0 Duke University research studies in education,|vno. 8. 
504    "Chapter bibliography": p. 23-24. Bibliography: p. [160] 
650  0 Subtraction. 
650  0 Learning, Psychology of. 
700 1  Moser, Harold E. 
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