@article {36072,
	title = {Potentially marginal arable land study, phases 1 : step 3 : estimates of annual cropping on or in proximity to lands which are potentially marginal for annual crop production, September 1988. Appendix I. Geographic distribution of potentially marginal acr},
	volume = {Internal document},
	year = {1988},
	pages = {43},
	author = {Hiley, J. and Wehrhahn, R. and White, D.}
}
