The tree-crop problem /
by Richard E. Bellman, Michael J. Hartley.
APA Citation
Bellman, R. E., Hartley, M. J. (1985). The tree-crop problem. [Washington, D.C.]: Development Research Dept., Economics and Research Staff, World Bank.
MLA Citation
Bellman, Richard E, and Michael J. Hartley. The Tree-crop Problem. [Washington, D.C.]: Development Research Dept., Economics and Research Staff, World Bank, 1985.
Warning: These citations may not always be complete (especially for serials).