 | Arthur Birnie - 1939 - 151 halaman
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 | Clifford James Hynning - 1939 - 116 halaman
...,3 Calif. 219 (1853). In/rs, p. 8. ' The Lumber Industry, 61st Conj., 3d sea*., S. Doc. 818, p. 3. 1 "The unsettled area has been so broken into by isolated...that there can hardly be said to be a frontier line," Compendium of the Eleventh Census (1890), pt. I, p. xlviii. 10 Conservation, said Gifford Pinchot,... | |
 | Andrew Love Neff - 1940 - 955 halaman
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 | 1941
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Up to and including 1880 the country had a frontier of settlement, but at present the unsettled area has been so broken into by isolated bodies of settlement that there can hardly be said to be a frontier line. 
