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![[TXT]](/icons/text.gif){kind=icon} isotopes_oil_gas_1984.txt | ||
| isotopes_oil_gas_1985.txt | ||
| isotopes_oil_gas_1986.txt | ||
| isotopes_oil_gas_1987.txt | ||
| isotopes_oil_gas_1988.txt | ||
| isotopes_oil_gas_1989.txt | ||
| isotopes_oil_gas_1990.txt | ||
| isotopes_oil_gas_1991.txt | ||
| isotopes_oil_gas_1992.txt | ||
| isotopes_oil_gas_1993.txt | ||
| isotopes_oil_gas_1994.txt | ||
| isotopes_oil_gas_1995.txt | ||
| isotopes_oil_gas_1996.txt | ||
| isotopes_oil_gas_1997.txt | ||
| isotopes_oil_gas_1998.txt | ||
| isotopes_oil_gas_1999.txt | ||
| isotopes_oil_gas_2000.txt | ||
| isotopes_oil_gas_2001.txt | ||
| isotopes_oil_gas_2002.txt | ||
| isotopes_oil_gas_2003.txt | ||
| isotopes_oil_gas_2004.txt | ||
| isotopes_oil_gas_2005.txt | ||
| isotopes_oil_gas_2006.txt | ||
| isotopes_oil_gas_2007.txt | ||
| isotopes_oil_gas_2008.txt | ||
| isotopes_oil_gas_2009.txt | ||
| isotopes_oil_gas_2010.txt | ||
| isotopes_oil_gas_2011.txt | ||
| isotopes_oil_gas_2012.txt | ||
| isotopes_oil_gas_2013.txt |
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