electron Tube Data sheets
	Gecovalve documents

(up)date	item	size
2008-04-26	1938 pricelist with tube data.	568,433 bytes
2009-11-02	Short data for Geco tubes. ☆Peter den Boer☆	177,775 bytes
2009-11-02	Short data for Geco tubes 1939/1940. ☆Peter den Boer☆	479,232 bytes