*[http://pages.ramapo.edu/~theed/Cold_War/f_Conclusion/readings/Ch_17_The_collapse%20_Soviet_Union_edit.pdf The collapse of the Soviet Union,
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*[http://pages.ramapo.edu/~theed/Cold_War/f_Conclusion/readings/Ch_17_The_collapse%20_Soviet_Union_edit.pdf The collapse of the Soviet Union, 1990-1991], ALEX PRAVDA