Note- If a URL is outdated you may be able to find a copy of the article by entering the URL into the search field at http://www.archive.org/.
Soil erosion URL:
http://cesimo.ing.ula.ve/GAIA/CASES/ZIM/soils.html. All references to soil erosion rates use these same numbers. The numbers all come from one single study, which some say was flawed and overstated the rate of soil erosion. If the specific numbers are wrong, I would assume that they are wrong in the same proportion for both commercial and communal farming.
Arable land/Population table derived from CIA Fact Book URL:
Quotes "Land and Racial Domination in Rhodesia" by Robin Palmer. As I've written elsewhere, this is the only book worth reading on the subject as the others simply use this book as their most important source.