Encyclopedias, Almanacs, Transcripts, and Maps
- Industrial and Commercial Waste
- industrial tribunal
- Industrial Waste Treatment
- Industry and Business, Energy as a Factor of Production in
- Industry and Business, Productivity and Energy Efficiency in
- Inform
- Infoterra (U.N. Environment Program)
- infrared wave
- Initiation: An Overview
- Initiation: Men's Initiation
- Initiation: Women's Initiation
- Injection Well
- Inner Asian Religions
- Innocent I
- Innokentii Veniaminov
- Inquisition, The: The Inquisition in the New World
- Inquisition, The: The Inquisition in the Old World
- Insectivora (Insectivores)
- Insects and Humans
- inside the Earth