1.

図書
図書
1. Conservation in the United States. 2nd ed
by A.F. Gustafson ... [et al.]
出版情報: Ithaca, N.Y. : Comstock, 1944
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2.

図書
図書
2. American economic problems (: pbk ; : hbk)
by S. Howard Patterson, A.W. Selwyn Little, Henry Reed Burch
出版情報: New York : Published for the U.S. Armed Forces Institute by the Macmillan, 1944
シリーズ名: War Department education manual ; EM 221
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