Apparatus and instruments for conducting, switching, transforming, [ accumulating, ] regulating or controlling electricity, namely, electric switches, [ electric meters; ] electric and electronic switching apparatus and control systems consisting thereof for mechanical engineering and plant engineering and construction, namely, electric switches, high-frequency switching power supplies; [ apparatus for recording, storage and/or control of the progress of electrical current, namely, batteries ...

Catalogs in the field of books and magazines relating to computer and information science

Prerecorded Computer Programs Used to Aid in the Administration of Ministries and Accompanying Computer Manuals Sold as a Unit Therewith

Prerecorded Computer Programs Used to Aid in the Administration of Ministries and Accompanying Computer Program Manuals Sold Therewith