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| Archive Reference / Library Class No. | D1851/P/7/BD1356-BD1579 |
| Former Reference | D1851/BOX/33 |
| Title | Technical drawings on microfiche. Numbers BD1356-BD1579 |
| Date | May 1952-Jun 1952 |
| Description | Arranged in chronological and "BD" reference order. Each microfiche has outer paper packaging which records the "BD" reference, another number (some starting with "R") and the date. Later drawings also have a descriptive title on the packaging. |
| Extent | 1 box |
| Level | File |
| Repository | Derbyshire Record Office |
| Archive Creator | Bryan Donkin & Co. Ltd of Chesterfield, Engineers |
| Format | Microfilm |