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File:Results of Fertilizer test field Tennessee Valley Authority 1942.gif
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Datoteka:Results of Fertilizer test field Tennessee Valley Authority 1942.gif
English
Tennessee
Valley
Authority
test
field
of
a practical operating farm on which TVA-produced phosphate has demonstrated its ability to encourage growth
Datoteka:List of agricultural experiment station publications received by the office (IA CAT10679738026).pdf
Mark 1.0falsefalse English applies to jurisdiction: United States
of
America determination method: work
of
the federal government
of
the United States