19 December – The composition of Christmas bells
There’s more on the composition of these and other alloys here.
<–– Go to day 18 | Return to Advent Calendar | Go to day 20 —>
19 December – The composition of Christmas bells
There’s more on the composition of these and other alloys here.
<–– Go to day 18 | Return to Advent Calendar | Go to day 20 —>