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astronomy surveys » astronomy surveying, astronomy survives, astronomy sergey
astronomy survey » astronomy sergey, autonomy survey, astronomy surveying
c practical » 2 practical, 7 practical, 8 practical
patrick c » patrick _, patrick a, patrick d
astronomy surveys » astronomy surveying, astronomy survives, astronomy sergey
astronomy survey » astronomy sergey, autonomy survey, astronomy surveying
c practical » 2 practical, 7 practical, 8 practical
patrick c » patrick _, patrick a, patrick d