| thallium | ||
| paste! |
81 Its compounds were once used in rat poisons and hair removers but are now banned. Léon adds some to minestrone soup. He's a professional. |
021108 |
| ... | ||
| Q | He was a professional. He has discovered firsthand why the compound was banned from rat poison. The folks who ate his minestrone have been learning too without understanding why. | 050508 |