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The T-72 is a Soviet-designed main battle tank that entered production in 1970. It was developed directly from Obyekt-172, and shares parallel features with the T-64A.[4] The T-72 was one of the most widely produced post-World War Two tanks, second only to the T-54/55 family, and the basic design has also been further developed as the T-90.
http://www.net-maquettes.com/pictures/t-72-m1-walkaround/