Natural mpweya mtengo tchati kwa Europe 1981
Price of Gasi mu 1981
| Date | Madola Btu Miliyoni |
|---|---|
| December 1981 | 4.600000 |
| November 1981 | 4.600000 |
| October 1981 | 4.600000 |
| September 1981 | 4.600000 |
| August 1981 | 4.600000 |
| July 1981 | 4.600000 |
| June 1981 | 4.600000 |
| mulole 1981 | 4.600000 |
| April 1981 | 4.600000 |
| March 1981 | 4.600000 |
| February 1981 | 4.600000 |
| January 1981 | 4.600000 |
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| Anapeza cholakwika? malangizowo? Tiuze | |