Roumasset, James, author
National University Press, c1981
Buku Teks
Horwitz, William, editor
Association of Official Agricultural Chemists, 1955
Buku Referensi
Shepherd, Geoffrey S., author
Iowa State University Press, 1968
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Paik, C. M., 1931-, author
McGraw-Hill, 1973
Buku Teks
Stermole, Franklin, author
Investment Evaluations Corp, 2014
Buku Teks