We do not know much about earlier cycles of warming / cooling and sea ice retreat / expansion. (judithcurry.com)
Additionally, as part of the REVEAL Long - Term Follow - Up Study, we are systematically studying the long - term psychological impact and health behavior changes in participants who learned their APOE genotype in earlier cycles of the REVEAL Study, some of whom were enrolled as early as 2000. (genomes2people.org)
«Though the boom of 1919, the crisis of 1920 and the depression of 1921 followed the patterns of earlier cycles,» wrote Mitchell, «we have seen how much this cycle was influenced by economic conditions resulting from the war and its sudden ending. (mises.org)