Titles written by Richard Ketchen:
Number of documents found: 2
- Berg, R. vanden
Title: Kwarts ABC
SubTitle: Spiegelwerk No.5
Keywords: electronic
Other Keywords: quartz
Edition: 1980s
Page or pages: 38
BHM No: 6833 - Berg, R. vanden
Title: Kwarts Techniek - Uiteenaetting en praktische handleiting over de techniek van kwartsuurwerken
SubTitle: Spiegelwerk no.12
Keywords: electronic
Other Keywords: quartz
Edition: 1986
Page or pages: 62
BHM No: 6834
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