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One approach to using the library catalog is to browse by Library of Congress subject headings that pertain to business in different geographic/political regions or countries. Here are links to some results in Franklin:
Catalog of the University of Pennsylvania Libraries' books, journals, films, scores, recordings, microforms, electronic resources, etc. It covers all libraries in the Penn system except for the Biddle Law Library, which has the LOLA catalog.
The combined catalog of the 60+ members of the Pennsylvania Academic Library Consortium, as well as a number of institutions in neighboring states, such as Rutgers and NYU. One can request books not owned or currently available at Penn.
Borrowing (green) and non-borrowing (red) members of the Inter-American Development Bank (Wikimedia Commons)