- Ian Allan Pub
- Icon Books
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- Iconografix, Inc.
- Idelson Gnocchi Pub
- Igi Distributors
- Il Pub
- Ilex Press
- Imaginador
- Imagination Intl Corp
- Imprint Unknown
- Imprints CRC Press - only for PT Products!
- In Easy Steps Limited
- Incentive Pubns
- Independent Pub Marketing
- Indian Chief Pub House
- Indiana Univ Pr
- Informa Pub
- Information Plus
- Insiders Guides
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- Intellect Books
- Interactive Design & Development
- Interlink Pub Group Inc
- Intermedia Outdoors
- Intermediate Technology
- Interpet Ltd
- Interweave Pr
- Intl Marine Pub Co
- Intrepid Traveler
- Ishi Pr
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- Island Press
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- Ithaca Press
- Itmb Pub Ltd
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