BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y …€¦ · It will be shown presently that this...
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© Copyright 1963: Instituto de Astronomía, Universidad Nacional Autónoma de México BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y TACUBAYA, VOL. 3, N°23, 1963.
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BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y TACUBAYA, VOL. 3, N°23, 1963.
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© C
opyr
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3: In
stitu
to d
e A
stro
nom
ía, U
nive
rsid
ad N
acio
nal A
utón
oma
de M
éxic
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![Page 3: BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y …€¦ · It will be shown presently that this period of timc determines a rate of shrinkage which, in 3 X 109 years, brings turns](https://reader034.fdocumento.com/reader034/viewer/2022050405/5f82a6c8234e10205b2fd91d/html5/thumbnails/3.jpg)
© C
opyr
ight
196
3: In
stitu
to d
e A
stro
nom
ía, U
nive
rsid
ad N
acio
nal A
utón
oma
de M
éxic
o