000
00250pam a2200097a 44500
082
_a
TR
_b
RL-66-174
100
_a
J. Edwin Chernosky
245
1
_a
Double sunspot-cycle variation in terrestrial magnetic activity
260
_a
_b
_c
997
_a
TR5520 C
999
_c
405519
_d
405519