J. Gregory Sidak Books

Protecting competition from the postal monopoly
Protecting competition from the postal monopoly

By J. Gregory Sidak

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"The Private Express Statutes protect the U.S. Postal Service from competition in the delivery of letter mail. In contrast, few if any corresponding rules protect competition in other areas from th...

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Foreign investment in American telecommunications
Foreign investment in American telecommunications

By J. Gregory Sidak

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Restrictions on foreign investment in U.S. telecommunications firms have harmed the interests of American consumers and investors, argues J. Gregory Sidak in this convincing study. Sidak shows why...

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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