ISBN10 : UCAL:B3099525 , ISBN13 :
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ISBN10 : HARVARD:32044102791027 , ISBN13 :
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ISBN10 : CHI:096947826 , ISBN13 :
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Includes "Official program of the...meeting of the Pennsylvania State Educational Association (sometimes separ
ISBN10 : STANFORD:36105006542562 , ISBN13 :
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Includes "Official program of the...meeting of the Pennsylvania State Educational Association (some times sepa
ISBN10 : PSU:000070100303 , ISBN13 :
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ISBN10 : OCLC:1104211449 , ISBN13 :
Page Number : 322
Excerpt from The Pennsylvania School Journal, 1874, Vol. 23 Third, take a proportion in arithmetic, and, by ac
ISBN10 : 026672325X , ISBN13 : 9780266723257
Page Number : 612