Example sentences of "over a period of about " in BNC.

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1 Altogether , tutorials take place over a period of about twenty-four weeks in the last year of a course , and usually by the last twelve tutorials a student has a much clearer idea of what he or she is about .
2 And gradually , over a period of about nine months , she began to lose the use of her eyes .
3 The rebuilding of the old manor took place over a period of about five years and was probably finished in about 1727 .
4 The system was developed over a period of about 10 years and arrived on the market in three stages .
5 The poor girl had gone off to her camp before she had formulated any hypotheses ; she had no idea as to what theory or concepts her work was to throw new light on , and so , to be on the safe side , she had recorded everything she could think of over a period of about six weeks and her notebooks practically filled a medium-sized suitcase .
6 They all had their pictures done and eventually over a period of about a year , she actually did a portrait of everybody in the Home .
7 CHESAPEAKE BAY Has created over a period of about 17000 years .
8 Over a period of about a year he was regressed six times at regular intervals .
9 The results of the pilot programme ( based on the ability of the mothers to recall what they had been taught two weeks previously ) were so promising that BRAC launched a programme to teach the method of preparing LGS to every household in the country over a period of about ten years .
10 Over a period of about eighteen months , her father hit her mother to such an extent that she went into a Battered Wives Home five times , taking her two daughters with her each time .
11 Although , perhaps it was fortunate in one sense that er it completely destroyed the main machine shop and er it , it all happened over a period of about twenty to twenty five minutes .
12 The work is to be done at home over a period of about nine months .
13 Erm , that over a period of about ten years , began to wane and by and large now I think feature analysis per se has been abandoned as a as a model for understanding human perception .
14 I knew him over a period of about two years before he died .
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