1962 Data
1973 Data
Replicate Data, 1962 and 1973
Replicate Data, 1962 and 1973, A User's Guide to the Machine-Readable File, Volume 1
Replicate Data, 1962 and 1973: A User's Guide to the Machine-Readable Data File, Volume II
1962 Data, A User's Guide to the Machine-Readable Data File, Volume I
1962 Data, A User's Guide to the Machine-Readable Data File, Volume II