https://www.vde-verlag.de/standards/0616020/din-en-60238-a2-vde-0616-1-a2-1998-06.html
DIN EN 60238/A2 VDE 0616-1/A2:1998-06 - Standards - VDE Publishing House
Edison screw lampholders; (IEC 60238:1996/A2:1997); German version EN 60238:1996/A2:1998
din en
https://barcelona.indymedia.org/media/all/display/60238/index.php?limit_start=30516
media/60238
media 60238 en IMC BCN.
media