Example sentences of "[noun pl] over a [adj] month period " in BNC.

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1 The depletion of the ozone layer over the northern hemisphere is to be the subject of a newly-launched European Arctic Stratosphere Experiment ( EASOE ) , involving 250 scientists from 17 countries over a five month period starting in November .
2 More than two-thirds of all council staff in Bexley who suffered violent attacks over a three month period worked in social services .
3 A second survey was undertaken to establish the level of loss of requested items over a six month period .
4 253 hours over a six month period gave a total of only 8.4 hours per team member per month ( or only 5.5 hours per month client contact if telephone calls and professional meetings were ignored ) .
5 The methodology involves extensive consultation of police records over a six month period together with indepth interviews with serving officers both men and women of varying experience throughout the police organisation from all ranks , from relief officers , CID to Inspectors of operations .
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