"Administratieve organisatie." . . "Commerce." . . "Administració." . . "Administracao De Empresas." . . . . "Verwaltung." . . "Chefs d'entreprise." . . . "Technique of administration administrative proficiency in business"@en . . . . "Technique of administration; administrative proficiency in business"@en . . . . . . . . . . "Technique of administration. administrative profiency in businss" . "Technique of administration : administrative proficiency in business" . . . . . . "Technique of administration" . . . . . . .