(1961). The chemical industry 1967-1968. Paris: Organization for Economic Cooperation and Development.
Παραπομπή Chicago StyleThe Chemical Industry 1967-1968. Paris: Organization for Economic Cooperation and Development, 1961.
Παραπομπή MLAThe Chemical Industry 1967-1968. Paris: Organization for Economic Cooperation and Development, 1961.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.