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Publisher
- Grolier Incorporated1
- Harvard University Press1
- Heyden & Son3
- High Technology1
- Holden-Day, Inc.1
- Hoover Institution Press1
- ICSU Press1
- IEEE Computer Society Press3
- ISI Press12
- Image Photographers2
- Imprimerie Royale P. A. Norstedt & Soner2
- Imprimerie Sainte Catherine1
- Indian Academy of Sciences1
- Indiana University Press1
- Information Please Publishing, Inc.1
- Instituto Superiore Di Sanita1
- International Business Machines Corporation1
- International Telephone and Telegraph Corporation2
- J. & A. Churchill Ltd.4
- Jet Propulsion Laboratory (U.S.)1