320.1
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        Fifield , Russoll H . Geoplitics in principle and practice , by Rissell H . Fifield and G . Etzel Pearcy ... Boston , New Yor k [ etc.] Ginn and company [1944] iv , 203 [1] p. ilus . ( maps) diagrs . 26x20 cm . " Selected reading list" : p. 193-194