A Things of Science unit to on fumed silica. Don’t know what that is? Either did I.
Here is the booklet:
Things of Science (1969) — Fumed Silica
More Things of Science scanned here.
The white powder that came in the unit:
Science, Things Of Science
You must be logged in to post a comment.
© 2022 Underlandia
Theme by Anders Noren — Up ↑