| #721 | TI : Technical information for industry. -- Jihoafrická republika : Pretoria : Technical information service of the CSIR, 1963, 1963-. -- ISSN 0040-0955 |
| #722 | Transactions of the I.R.E. Professional Group on Aeronautical and Navigational Electronics. -- New York : Institute of Radio Engineers. Professional Group on Aeronautical and Navigational Electronics, 1953-1955. -- ISSN 2168-0167 print. -- ISSN 2168-0175 online |
| #723 | Transactions of the I.R.E. Professional Group on Airborne Electronics. -- New York : Institute of Radio Engineers, 1951-1953. -- ISSN 2168-0213 print. -- ISSN 2168-0221 online |
| #724 | Transactions of the I.R.E. Professional Group on Antennas and Propagation. -- New York : Institute of Radio Engineers, 1952-1955. -- ISSN 2168-0639 print. -- ISSN 2168-0647 online |
| #725 | Transactions of the I.R.E. Professional Group on Electron Devices. -- New York : Institute of Radio Engineers, 1952-1954. -- ISSN 0197-6370 |
| #726 | Transactions of the IRE Professional Group on Audio. -- New York : Institute of Radio Engineers, 1953-1954. -- ISSN 2168-2976 print. -- ISSN 2168-2976 online |
| #727 | Transactions of the IRE Professional Group on Circuit Theory. -- New York : Institute of Radio Engineers, 1952-1953. -- ISSN 0197-6389 print. -- ISSN 2331-3870 online |
| #728 | Transactions of the IRE Professional Group on Communications Systems. -- New York : Institute of Radio Engineers., 1953-1955. -- ISSN 0277-6243 print. -- ISSN 2162-2140 online |
| #729 | Transactions of the IRE Professional Group on Component Parts. -- New York : Institute of Electrical and Electronics Engineers, 1954. -- ISSN 2168-1686 print. -- ISSN 2168-1694 online |
| #730 | Transactions of the IRE Professional Group on Engineering Management. -- New York : Institute of Radio Engineers, 1954. -- ISSN 0276-1165 print. -- ISSN 2331-396X online |