LEADER 00000cam a2200349   4500 
008    720107|19611960ohua     b    000 0 eng u 
010       61013900 //r69 
035    (CaOTULAS)121019804 
035    |9(CaOTULAS)121019804 
040    LC|beng|cRID 
049    RIDM 
050  0 QA135.5|b.O755 
081    CTL0144692 
090    QA135.5 .O755 
100 1  Osborn, Roger.|0https://id.loc.gov/authorities/names/
       n50049622 
245 10 Extending mathematics understanding /|cRoger Osborn [and 
       others]. 
264  1 Columbus, Ohio :|bC. E. Merrill Books,|c[1961] 
300    278 pages :|billustrations ;|c24 cm 
336    text|btxt|2rdacontent 
337    unmediated|bn|2rdamedia 
338    volume|bnc|2rdacarrier 
500    Earlier ed. copyright 1960 under the titles Toward 
       improved understanding of mathematics, part I and Toward 
       improved understanding of mathematics, part II, by M. V. 
       DeVault, published in 1960. 
500    Revised in 1969, published separately in two volumes under
       the titles Understanding the number system and Extending 
       understandings of mathematics. 
504    Bibliography: pages 264-271. 
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  DeVault, M. Vere.|tToward improved understanding of 
       mathematics. 
901    MARCIVE 20231220 
935    38850