Snedecor, George W., author
The Iowa State University Press, 1980
Buku Teks
Snedecor, George W., author
The Iowa State University Press, 1950
Buku Teks
Snedecor, George W., author
The Iowa State University Press, 1982
Buku Teks
Barnett, Vic, author
John Wiley & Sons, 1982
Buku Teks
Keeping, E.S., author
Van Nostrand Reinhold, 1962
Buku Teks