Serial Number/Date Code Sequence The date that a unit was manufactured can be determined by looking at the unit serial number. Compare the unit serial number to the three examples below (manufactured in 1970-77, 1978-92, or 1993-current).

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Elizabeth Carruthers ‘A number Line in the Nursery ...

www.childrens-mathematics.net

Elizabeth Carruthers ‘A number Line in the Nursery Classroom: a Vehicle for Understanding Children’s Number Knowledge’ Early Years, Volume 18. Number 1.

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Engine Number Guide - Blue Grass Diesel - Home

bgdiesel.com

Engine Number Guide Engines < 2 litre/cylinder (produced post 1974) Year of manufacture code This code indicates the calendar year of manufacture. The letters I, O, Q, R and Z will not be used.

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