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Google圖書搜尋
The Magnetic Homogenity of Testing Grounds for Investigation and Compensation of Airplane Compasses
Nils Peter Ambolt
出版
Statens Reproduktions-anstalt
, 1946
URL
http://books.google.com.hk/books?id=L0OLGwAACAAJ&hl=&source=gbs_api