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R. H. Black

Born 1892-01-01

Identifiers

Internet ArchiveCAT87204444
Open LibraryOL9886475A

Top Subjects

Wheat (1)
Grain (1)
Machinery (1)

Books by R. H. Black

Total count: 2

Foreign material in spring wheat

U.S. Dept. of Agriculture1922-01-01
Cleaning grain on farms and in country elevators

U.S. Dept. of Agriculture1927-01-01

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