| 1-19 of 19Flashcard sets with a 'impregnable' term meaning 'not able to be conquered; impenetrable' |
| # | Title | Terms | Date |
| 1 | Vocabulary Power Plus for the New SAT Book II — Lesson Eighteenby prestwickhouse | 15 terms | February 16, 2009 |
| 2 | language arts final reviewby swimkitty14 | 46 terms | May 23, 2009 |
| 3 | Vocab Power Plus: Book 2: Lessons 17 & 18by Robob | 30 terms | April 20, 2009 |
| 4 | Lesson 18by mab0312 | 15 terms | February 10, 2009 |
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| 5 | Vocabulary Power Plus for the new SAT: Lessons 15-20by Robob | 65 terms | May 31, 2009 |
| 6 | Great Expectations Vocabulary Chapters 1-10by astwordskills | 20 terms | October 23, 2009 |
| 7 | Lessons 17 and 18by saaaaaam24 | 30 terms | November 20, 2009 |
| 8 | Lesson 18by tsirichr1 | 15 terms | April 24, 2008 |
| 9 | ALARP FINALby caitlynbug2012 | 112 terms | May 19, 2009 |
| 10 | Vocab Lesson 18by Brunetoujours07 | 19 terms | April 15, 2009 |
| 11 | 17 + 18by toneeburley1 | 30 terms | November 20, 2009 |
| 12 | Honors English 2 Vocab Sets 17 and 18by scoot123456 | 30 terms | November 20, 2009 |
| 13 | Section Eighteen by ablosser | 16 terms | February 19, 2009 |
| 14 | SAT Vocab Lessons 17 & 18 (10th)by sar_attraction | 30 terms | April 28, 2009 |
| 15 | Kelsi's Vocab Unit 18 10 CPby gotwater444 | 15 terms | May 14, 2009 |
| 16 | vocab 18 brianna walkerby hottiedatrepjrsy | 15 terms | May 13, 2009 |
| 17 | Vocab 18by GooseH8ter1121 | 15 terms | March 20, 2009 |
| 18 | Vocab-Lesson 18by 100887 | 15 terms | April 22, 2008 |
| 19 | vocab 18by sallit | 15 terms | April 15, 2008 |
