| #6921 | Technical book review index. -- Pittsburgh : JAAD Pub. Co., 1935-. -- ISSN 0040-0890 |
| #6922 | Technical Bookguide. -- United Kingdom : London : Hansom Books, 1957-1961 |
| #6923 | Technical bulletin. -- United States : Maine : University of Maine, 1960-1965 |
| #6924 | Technical Education and Industrial Training. -- London : Evans Brothers, 1959-1969. -- ISSN 0374-4701 |
| #6925 | Technical magazine - Minerals Engineering Society. -- United Kingdom : Birmingham : University of Birmingham, 1969, 1969- |
| #6926 | Technical review. -- Naerum : Brüel & Kjaer, 1952-. -- ISSN 0007-2621 |
| #6927 | Technical review Sulzer. -- Winterthur : Sulzer Management, 1993-2001. -- ISSN 1420-7559 |
| #6928 | Technical review Sulzer. -- Winterthur : Sulzer Management, 1993-2001. -- ISSN 1420-7540 |
| #6929 | Technical survey. -- United States : Elizabeth : Technical Survey, 1945 Cleveland : Predicasts, 1945-1982. -- ISSN 0040-1005 |
| #6930 | Technical Survey : Copper Development Association. -- United Kingdom : London : Copper Development Association, 1953-1959. -- ISSN 0574-007X |