02:34 duration 2 minutes 34 seconds
HDS101_Topic8-2_AudioPart7
Part 7 of the audio guide for HDS101 Topic 8.2: Early Communicators.
04:30 duration 4 minutes 30 seconds
HDS101_Topic8-2_AudioPart6
Part 6 of the audio guide for HDS101 Topic 8.2: Early Communicators.