The Oxford Encyclopedia of Agriculture and the Environment : 3-Volume Set Hazlett, Richard W. 9780190496616 Oxford Reference Online:Reference Library Innbundet 27.08.2020 Engelsk I salg
The American West at Risk : Science, Myths, and Politics of Land Abuse and Recovery Wilshire, Howard G. Hazlett, Richard W. Nielson, Jane E. 9780195142051 Innbundet 26.06.2008 Engelsk I salg
