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Neidio i'r prif gynnwys.

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Oriel Luniau

PFA - Penrhyn Castle Further Additional
- 6 - Maps and plans
  - 6 - Engineering Plans

Rhif Cyf Amg	PFA/6/301
Teitl	Plan of filter beds
Disgrifiad	Showing section of overflow. Coloured, 1 inch : 5 feet.
Dyddiad	Late19th - Early 20th century

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