?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Jespersen&rft.aufirst=Lizzie+Melby&rft.au=Jespersen%2C+Lizzie+Melby&rft.btitle=%C3%98kologiens+bidrag+til+samfundsgoder&rft.date=2015&rft.isbn=978-87-92499-20-2&rft.genre=book