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United Facilities Criteria CD 1
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> Figure 2-13. Hours from dawn to dark - twilight and sunlight
Figure 2-12. Hours of sunlight
Special surficial features and markings
General Provisions - Arctic and Subarctic Construction
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TM
5-852-1/AFR
88-19,
Volume
1
Figure
2-13.
Hours
from
dawn
to
dark
-
twilight
and
sunlight.
2-18