Title: The relativity of concentration observations A res

The relativity of concentration observations: A research report from the Conference Board's Division of Economic Research (Conference Board report ; no. 742)

Condición: good. A copy that has been read, remains in good condition. All pages are intact, and the cover is intact. The spine and cover show signs of wear. Pages can include notes and highlighting and show signs of wear, and the copy can include "From the library of" labels or previous owner inscriptions. 100% GUARANTEE! Shipped with delivery confirmation, if you're not satisfied with purchase please return item! Ships via media mail. Nº de ref. del artículo: OTV.0823701654.G

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