Useful resources for legume growers: inoculants for nitrogen fixation

When should I inoculate? Which inoculant products can I use? What does good nodulation of a pulse crop look like?
A new webpage at the University of Adelaide has downloads of publications (latest information about inoculation), videos for viewing and links to other useful sites.
Link: http://www.agwine.adelaide.edu.au/research/farming/legumes-nitrogen/legume-inoculation/