By Stoknes, Per Espen, Randers, Jorgen
By Meadows, Donella H., Meadows, Dennis L., Randers, Jorgen, Tinbergen, Jan
By Meadows, Donella H., Dennis L., Randers, Jorgen, Tinbergen, Jan
By Meadows, Donella H., Dennis L., Randers, Jorgen