Não informado. (1960). Paper Technology. British Paper and Board Makers Association, Technical Section.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Paper Technology. London: British Paper and Board Makers Association, Technical Section, 1960.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Paper Technology. British Paper and Board Makers Association, Technical Section, 1960.
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