By 1970 Things of Science had become much more colorful — the iconic yellow-gold paper swapped out for other pastel hues.
Here is the booklet:
Things of Science (1970) — Chemical Indicators
More Things of Science scanned here.
The “things”:
By 1970 Things of Science had become much more colorful — the iconic yellow-gold paper swapped out for other pastel hues.
Here is the booklet:
Things of Science (1970) — Chemical Indicators
More Things of Science scanned here.
The “things”:
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