American Bureau of Shipping. Rules for Building and Classing: Steel Barges : 1991. American Bureau of Shipping.
Cita Chicago Style (17a ed.)American Bureau of Shipping. Rules for Building and Classing: Steel Barges : 1991. New York: American Bureau of Shipping.
Cita MLA (9a ed.)American Bureau of Shipping. Rules for Building and Classing: Steel Barges : 1991. American Bureau of Shipping.
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