@Dr Peter Hoare β¬ (Ph or pH? [Thinking Face]) (PHoare1963)
Twitter Status 1286762430295609345 on iEmoji
1.
...but wait! There's more!
Show more tweets from
@Dr Peter Hoare β¬ (Ph or pH? [Thinking Face]) (PHoare1963)
1.
2.
3.
4. 5. 6. 7.
8.
9. 10. 11.