| sample 4 |
10 years, 6 weeks and 4 days |
| Ferromagnetism |
10 years, 6 weeks and 4 days |
| sample 3 |
10 years, 6 weeks and 4 days |
| sample 2 |
10 years, 6 weeks and 4 days |
| Magnet |
10 years, 6 weeks and 4 days |
| University of Konstanz |
10 years, 6 weeks and 4 days |
| Political science |
10 years, 6 weeks and 4 days |
| Historian |
10 years, 6 weeks and 4 days |
| Make Money |
10 years, 6 weeks and 4 days |
| World War I |
10 years, 6 weeks and 4 days |
| Office of Naval Intelligence |
10 years, 6 weeks and 4 days |
| Active sonar |
10 years, 6 weeks and 4 days |
| Hydroacoustics |
10 years, 6 weeks and 4 days |
| sample |
10 years, 6 weeks and 4 days |
| Underwater acoustics |
10 years, 6 weeks and 4 days |
