demography
(roofing) The live load due to the weight of snow on a structure, such as a roof; included in the design calculations.
The compass point halfway between west and west-northwest, specifically 281.25°, abbreviated as WbN.
A hamlet in Hatherton parish, South Staffordshire district, Staffordshire, England (OS grid ref SJ9509).
The study of the characteristics of human populations, especially with regards to their makeup and fluctuations and the social causes behind these.
人口統計学は、出生率の変化や移住のパターンが経済政策にどのような影響を与えるかを明らかにしている。
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