Great Video Series on Youtube

[Ulma Doctor]

Hello ladies and gentlemen,
i found some very interesting videos on youtube.
i believe they were produced in the 80's at a guess, but very good information
here is the video list:
https://www.youtube.com/channel/UC6G6nfxpNP4tLZdJFIkx69w/videos

and a sample video.

i hope you enjoy!