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to phrases
cycle de quatre-vingts ans
life.sc.
Gleissberg cycle
;
80-year cycle
;
eighty-year cycle
;
eighty-year solar cycle
;
eighty-year solar sunspot cycle
;
eighty-year sunspot cycle
;
80-year Gleissberg cycle
cycle de quatre-vingts ans
:
8 phrases
in 1 subject
Life sciences
8
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