LEADER 00000nam a2200421 i 4500 
001    ocm01924513 
008    760107t19751975dcu      b    001 0 eng   
010       75029896 
019    2938248 
020    0871200767 :|c$5.00 
035    (OCoLC)1924513 
040    DLC|beng|cDLC|dm/c 
049    RIDM 
050 0  QA135.5|b.G54 1975 
082    372.7 
090    QA135.5 .G54 1975 
100 1  Callahan, Leroy G.|0https://id.loc.gov/authorities/names/
       n82270100 
245 10 Elementary school mathematics :|ba guide to current 
       research /|cLeroy G. Callahan, Vincent J. Glennon. 
250    4th ed. 
264  1 Washington :|bAssociation for Supervision and Curriculum 
       Development,|c[1975] 
264  4 |c©1975 
300    xi, 188 pages :|bgraphs ;|c23 cm 
336    text|btxt|2rdacontent 
337    unmediated|bn|2rdamedia 
338    volume|bnc|2rdacarrier 
500    Previous editions by V. J. Glennon and L. G. Callahan. 
500    Published in 1952 and 1958 under title: What does research
       say about arithmetic? 
500    Includes index. 
504    Bibliography: pages 151-182. 
650  0 Mathematics|xStudy and teaching (Elementary)|0https://
       id.loc.gov/authorities/subjects/sh85082163 
650  7 Mathematics|xStudy and teaching (Elementary)|2fast|0https:
       //id.worldcat.org/fast/1012272 
700 1  Glennon, Vincent Joseph,|d1915-|tElementary school 
       mathematics. 
901    MARCIVE 20231220 
935    169898 
948    |d20220526|cMH|tcr 035-9project