Text ( visual ) : unmediated Camp Century : city under the ice. -- [1st ed.]. -- Philadelphia : Chilton Books , [1962]. -- 143 p. : ill. ; 21 cm. -- (BA10380014) ; https://ci.nii.ac.jp/ncid/BA10380014 Author Heading(s): Wager, Walter H.. -- Classification(s): LCC : G765.C3 ; DC : 919.8. -- Subject Heading(s): LCSH : Camp Century, Greenland

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