RM 7487, reference material for 130 mm flexible disk cartridges recorded on both sides:
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Bibliographic Details
Main Author: Schroeder, Hans J. (Author)
Format: Book
Language:English
Published: Braunschweig 1986
Edition:2. rev. ed.
Series:Physikalisch-Technische Bundesanstalt <Braunschweig>: PTB-Bericht / Abteilung Akustik 25
Subjects:
Physical Description:III, 36 S.

There is no print copy available.

Interlibrary loan Place Request Caution: Not in THWS collection!