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- lánchró Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- full aperture
- en
- Sainmhíniú total effective diameter of a lens Tagairt "COM-EN based on:""aperture"". A Dictionary of Physics. Ed. John Daintith. Oxford University Press (OUP), 2009. Oxford Reference Online. OUP. DGT. http://www.oxfordreference.com/views/ENTRY.html?subview=Main&entry=t83.e133 [21.3.2011]"