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| Compilation Diagram |
| A compilation diagram lists the source(s) of data used to generate the map. It also delineates what portions of the map were based on each source. In this particular example, the data compiled for the new base map is derived from various older, existing maps in addition to new survey work. |
| The diagram below is taken from the margin of a trench map. |
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Contact: mapref@mcmaster.ca