http://en.wikipedia.org 26 August 2009 Oceanic trench oceanic trench oceanic trench oceanic trench oceanic trenches English English o English English English Oceanic trench English oceanic trenches English אנ' English en:Oceanic trench oceanic trenches English English Oceanic trench English English oceanic trench English oceanic trenches English oceanic trenches trenches oceanic trenches oceanic trench Oceanic trench History of the term “trench” oceanic trenches אנ' oceanic trenches en oceanic trenches English Oceanic Trench ACCRETIONARY PRISM oceanic trench Oceanic trench oceanic trenches en:Oceanic trench English oceanic trenches oceanic trenches English submarine trench ocean deeps oceanic trenches English Source English trenches English English oceanic trenches