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1
C:
IOP Publishing 2012 Sep 22:0:0
sunspots
sunspot
cycle
solar
variations
livingston
figure
fraction
spots
strengths
hcr
hlp
categories
pevtsov
correlation
magnetic
average
decrease
gradual
strongest
measurements
mvh
activity
dynamo
observatory
presence
astrophysical
averages
cycles
decline
l20
observations
reported
smallest
spectral
total
5pp
annual
astronomical
cyclic
investigate
journal
largest
minima
nagovitsyn
national
observed
october
shown
values
Year:
2012
Language:
english
File:
PDF, 850 KB
Your tags:
0
/
0
english, 2012
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