Natural mpweya mtengo tchati kwa Europe 1971
Price of Gasi mu 1971
| Date | Madola Btu Miliyoni |
|---|---|
| December 1971 | 0.502244 |
| November 1971 | 0.502244 |
| October 1971 | 0.502244 |
| September 1971 | 0.502244 |
| August 1971 | 0.502244 |
| July 1971 | 0.502244 |
| June 1971 | 0.502244 |
| mulole 1971 | 0.502244 |
| April 1971 | 0.502244 |
| March 1971 | 0.502244 |
| February 1971 | 0.502244 |
| January 1971 | 0.502244 |
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| Anapeza cholakwika? malangizowo? Tiuze | |