Andre Bationo, editor
Lessons learned from long-term soil fertility management experiments in Africa
[, Springer], 2012
eBooks
Gordon, Lawrence A.
Improving capital budgeting: a decision support system approach / Lawrence A. Gordon and George E. Pinches
Mass. Addison-Wesley., 1984
Buku Teks
Julius Hermawan
Membangun decision support system
Andi , 2005
Buku Teks
Thompson, Louis M.
Soils and soil fertility
McGraw-Hill, 1978
Buku Teks
A Symposium on fertility in sub-sahara Africa
Washington, D.C :Worl bank, 1996.,
Buku Teks