IPC : CLASS for Windows (International Patent Classification (IPC) Cumulative and Linguistic Advanced Search System) : User's Guide Version 3.0 on CD-ROM = Guide de l'utilisateur Version 3.0 = Benutzerhandbuch Version 3.0 = Gui?a del usuario Versio?n 3.0 = [Russian text].
IPC : CLASS for Windows (International Patent Classification (IPC) Cumulative and Linguistic Advanced Search System) : User's Guide Version 3.0 on CD-ROM = Guide de l'utilisateur Version 3.0 = Benutzerhandbuch Version 3.0 = Gui?a del usuario Versio?n 3.0 = [Russian text].
Recd 01/97; IPC:CLASS contents IPC edition 1 to edition 6 + catchword indexes in English and French, edition 4 to 6 + catchword index in German, edition 5 and 6 in Hungarian, edition 6 + catchword index in Russian and edition 5, 6 + catchword index in Spanish;.