Não informado. (1965). Farm Building Progress. Scottish Farm Buildings Investigation Unit.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Farm Building Progress. Aberdeen, Escocia: Scottish Farm Buildings Investigation Unit, 1965.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Farm Building Progress. Scottish Farm Buildings Investigation Unit, 1965.
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