| #401 | The lighting journal : official journal of the Institution of Lighting Engineers. -- Velká Británie : Rugby : Institution of Lighting Engineers, 1986- |
| #402 | The sun at work. -- Spojené státy americké - United States : Phoenix, Arizona : Association for Applied Solar Energy., 1956 Tempe, Arizona : Association for Applied Solar Energy Te, 1956-1969. -- ISSN 0585-9301 |
| #403 | Toshiba's selected papers on science & technology. -- Tokyo : Toshiba Corporation, 1989-1999. -- ISSN 0916-1465 |
| #404 | Transactions of the IRE Professional Group on Nuclear Science. -- New York : Institute of Radio Engineers, 1954. -- ISSN 0277-6278 print. -- ISSN 2374-9822 online |
| #405 | Transmission & distribution world. -- Overland Park : Intertec Pub. Corp., 1996-. -- ISSN 1087-0849 |
| #406 | Turkey power report. -- London : Business Monitor International, 2007-. -- ISSN 1754-4165 |
| #407 | Turkmenistan oil & gas report. -- London : Business Monitor International, 2009-. -- ISSN 1758-4701 |
| #408 | U plynárny 500 : Měsíčník koncernu Pražská plynárenská. -- Praha : Pražská plynárenská, 2000- |
| #409 | Ukraine power report. -- London : Business Monitor International, 2007-. -- ISSN 1754-4173 |
| #410 | United States power report. -- London : Business Monitor International, 2008-. -- ISSN 1758-4884 |