| http://www.w3.org/ns/prov#value | - Specialist references books, magazines, 3-view draws and pictures are a MUST. You can find Viggen references in World Air Power Journal issue 13, Air International volume 56 issue 2, Jets" volume 1996 issue 7, Scale Aircraft Modelling volume 14 issue 5, Lotniczych issue 16 and finally an old issue from an out-of-business model magazine named Aerei Modellismo.
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