The TEI Library is a bi-lingual (Thai/English) specialized environmental library, supporting the vision of TEI and the project activities of the different Programs of TEI.

The collections of the Library cover a wide range of environment related subjects such as pollution, waste management, cleaner technology, global warming, forestry, status of the environment, environmental management and good governance, international environmental agreements, national environmental legislation, sustainable development, and so forth.

The type of publications included range from project and research reports, academic, technical and general publications, videos and CD Roms. The Library also maintains a collection of environmental newsclippings, environmental newsletters, periodicals and web sites.