| Understanding life Matches 7 items |
| Understanding life series Matches 2 items |
| Understanding life series. Matches 9 items |
| Understanding literature Matches 6 items |
| Understanding modern European and Latin American literature Matches 2 items |
| Understanding modern European and Latin American literature Matches 9 items |
| Understanding modern nations Matches 9 items |
| Understanding modern nations Matches 2 items |
| Understanding modern nations. Matches 8 items |
| Understanding orld Christianity Matches 1 item |