This timeline shows the leaders of the Soviet Union and when they ruled starting with Kerensky, the head of the Provisional Government, and ending with Gorbachev in 1991 when the Russian Republic was formed. http://www.rff.com/timeline_soviet.htm
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Phycologist in every subfield draw on and contribute to knowledge from other subfields.
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Nepotism is the practice among those with power or influence of favouring relatives or friends, especially by giving them jobs.
Favoritism is the practice of giving unfair preferential treatment to one person or group at the expense of another.
Mineral Hardness is how scratch resistant a mineral is.
