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- catalog contributor b4690463.
 - catalog created "1901.".
 - catalog date "1901".
 - catalog date "1901.".
 - catalog dateCopyrighted "1901.".
 - catalog description "Thesis - University of Pennsylvania, 1900.".
 - catalog extent "92 p.".
 - catalog hasFormat "Inquiry into the teaching of addition and subtraction .".
 - catalog isFormatOf "Inquiry into the teaching of addition and subtraction .".
 - catalog issued "1901".
 - catalog issued "1901.".
 - catalog language "eng".
 - catalog publisher "Philadelphia, Avil Printing Co.,".
 - catalog relation "Inquiry into the teaching of addition and subtraction .".
 - catalog subject "Arithmetic Study and teaching (Elementary)".
 - catalog subject "Arithmetic Study and teaching (Primary)".
 - catalog subject "QA135 .Y68".
 - catalog title "An inquiry into the teaching of addition and subtraction.".
 - catalog type "text".