"National Computing Centre Limited." . . . . . . . . "Catalogs"@en . "Directories" . "Visible record computers and invoicing/accounting computer systems: a guide to equipment currently available in the U.K. suitable for accounting and other office applications" . . . . "Visible record computers and invoicing/accounting computer systems a guide to equipment currently available in the U.K. suitable for accounting and other office applications"@en . . . . . "Electronic digital computers." . . "Electronic digital computers Catalogs." . . . . "Electronic data processing." . .