Free Field Read (Algorithm 239 [I5]) CACM August, 1964 McKeeman, W. M. CA640810 JB March 9, 1978 6:56 PM 1020 5 1020 1020 5 1020 1020 5 1020 1705 5 1020 984 6 1020 986 6 1020 1020 6 1020 1321 6 1020