?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=H+A&rft.au=Freeman%2C+H+A&rft.aulast=Freeman&rft.isbn=0-85199-828-3&rft.date=2005&rft.title=Assessing+the+impacts+of+natural+resource+management+interventions+in+agriculture%3A+concepts%2C+issues+and+challenges&rft.tpages=195&rft.btitle=Natural+resource+management+in+agriculture%3A+methods+for+assessing+economic+and+environmental+impacts&rft.genre=bookitem