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- catalog contributor b7425163.
- catalog created "1954.".
- catalog date "1954".
- catalog date "1954.".
- catalog dateCopyrighted "1954.".
- catalog extent "30 ℓ.".
- catalog issued "1954".
- catalog issued "1954.".
- catalog language "eng".
- catalog publisher "[n.p.]".
- catalog title "A study of the effect of air transportation upon profits resulting from changes in costs at various levels of volume when prices remain constant. Prepared under the direction of Joseph D. Boylan.".
- catalog type "text".