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- a50009657 contributor B12861416.
- a50009657 created "1949.".
- a50009657 date "1949".
- a50009657 date "1949.".
- a50009657 dateCopyrighted "1949.".
- a50009657 extent "128 p.".
- a50009657 isPartOf "Illinois Secondary School Curriculum Program. Bulletin no. 3".
- a50009657 isPartOf "[Illinois. Dept. of Public Instruction] Circular series A, no. 51".
- a50009657 issued "1949".
- a50009657 issued "1949.".
- a50009657 language "eng".
- a50009657 publisher "[Springfield]".
- a50009657 subject "373.773".
- a50009657 subject "Education Curricula".
- a50009657 subject "Education Research.".
- a50009657 subject "L142 .B42 no. 51, no. 3".
- a50009657 title "How to conduct the holding power study, sponsored by the Illinois Secondary School Curriculum Program.".
- a50009657 type "text".