Example sentences of "back at [adv] [prep] the [adj] " in BNC.

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1 Their history goes back at least to the Ordovician , although some of the Palaeozoic asteroids are distantly related , if at all , to the living species .
2 Soviet initiatives for the Mediterranean in the guise of denuclearisation or the creation of zones of peace date back at least to the Soviet ‘ Draft Declaration on Non-Intervention in the Middle East ’ presented in February 1957 .
3 Idealism has a long history in philosophy , going back at least to the Irish philosopher Berkeley , and it is sometimes attributed , as it was by Marx , to Plato .
4 In the United States it dates back at least to the Civil War ; the 1949 John Ford-John Wayne movie , ‘ She Wore a Yellow Ribbon ’ , underscores the practice 's lineage .
5 The sheer number of monks became an obsession that bound together reforming bureaucrats and their liberal heirs , showing how both drew on the criticism of the ‘ sterile ’ classes , which goes back at least to the sixteenth century .
6 The idea itself went back at least to the 1850s when such boards had been set up in shipbuilding on the Wear and for the silk trade in Macclesfield .
7 An alternative usage , which goes back at least to the seventeenth century , made " family " a widely dispersed group of relatives , loosely linked by ties of " blood " and affinity , but not necessarily associated with any one household .
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