@article{oai:tsukuba.repo.nii.ac.jp:00024609,
 author = {Appiah-Nkansah, Nana Baah},
 issue = {2},
 journal = {Journal of Developments in Sustainable Agriculture},
 month = {},
 pages = {93--105},
 title = {Problem Structure Analysis of Irrigation Systems in the Upper West Region of Ghana},
 volume = {4},
 year = {2009}
}