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1
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Soil survey : clarion country pennsylvania
Published 1958“…United States Government Printing Office ,…”
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4
Site preparation reforestation of droughty acid sands
Published 1972“…United States Government Printing Office ,…”
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5
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Diseases of forest shade trees of United States
Published 1971“…United States Government Printing Office ,…”
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11
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18
Crops in peace and war : the yearbook of agriculture 1950-1951
Published 1950“…United States Government Printing Office ,…”
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19
Annual report of the Board of Regents of the Smithsonian Institution
Published 1952“…United States Government Printing Office ,…”
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20
State legislation for better land use : a special report
Published 1941“…United States Government Printing Office ,…”
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