Latest version:

• Data required for the assignation of Digital Object Identifiers in the Global Information System - v.2.1 (http://www.fao.org/3/a-bt113e.pdf). Also available in French, Spanish and Arabic

Outdated versions:

• Data required for the assignation of Digital Object Identifiers in the Global Information System - v.2 (http://www.fao.org/3/a-br574e.pdf).  Also available in Spanish, French and Arabic
  
• Data required for the assignation of Digital Object Identifiers in the Global Information System - v.1 (http://www.fao.org/3/a-bp767e.pdf)