Example sentences of "over [art] [adv] short period [prep] " in BNC.

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1 Nevertheless , they counter that the physical environment should not be considered a constant , even over the relatively short period of agricultural settlement in Great Britain , in part because of climatic change and its consequences , in part because of changes wrought by land use practices , and in part because of changed perceptions of the environment ; see also Prince ( 1971 ) , and Blaikie and Brookfield ( 1987 ) .
2 Our own surveys confirm a strong switch towards optimism between our Mid-Term Wave in 1986 and our Pre-Campaign Wave in March 1987 , but over the relatively short period from our Pre-Campaign Wave to the end of the campaign overall trends in economic perceptions were small .
3 Comparison of the contents of the first two editions of Craig 's ‘ Geology of Scotland ’ , published in 1965 and 1983 , reveals just how completely and all-pervasively this change took place over a very short period of time .
4 Elicitation procedures make it possible to examine a very broad spectrum of linguistic abilities in a systematic manner over a relatively short period of time .
5 It appears entirely possible for a coronary artery to progress from one with hardly any narrowing to one which is completely blocked over a relatively short period of time ; and conversely , it is possible for a severe coronary stenosis to stay as a severe coronary stenosis without progressing for several years .
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