Global Ex-Situ Crop Diversity Conservation and the Svalbard Global Seed Vault: Assessing the Current Status Westengen, Ola T. ; Jeppson, Simon ; Guarino, Luigi Abstract Publication: PLoS ONE Pub Date: May 2013 DOI: 10.1371/journal.pone.0064146 Bibcode: 2013PLoSO...864146W