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Farm Drainage
作者
Emil Wilhelm Lehmann / Tracy Allen Pitzen
出版1939
ISBN
UIUC:30112069219365
主題
Drainage
Straw-loft Poultry House
作者
Arthur Samuel Colby / Emil Wilhelm Lehmann / Harold Clayton M. Case / Herbert Howard Alp / John Henry Bigger / Lee Adrian Somers / Ray Iris Shawl / Walter August Huelsen / Willard Jason Corbett / William Barbour Nevens / Milton Dyer Farrar / Wesley Pillsbury Flint / Alvin Frederick Kuhlman / Joseph Ackerman / Paul Hubert Tracy / Tracy Allen Pitzen
出版1939
ISBN
UIUC:30112070028409
主題
Agriculture
Farm Drainage
作者
Emil Wilhelm Lehmann / Tracy Allen Pitzen
出版1939
ISBN
UIUC:30112069219365
主題
Drainage
Agricultural Outlook for Illinois, 1939
作者
Emil Wilhelm Lehmann / Harrison August Ruehe / Milton Dyer Farrar / Robert Graham / Walter August Huelsen / William Barbour Nevens / Tracy Allen Pitzen
出版1938
ISBN
UIUC:30112039962318
主題
Agriculture
Straw-loft Poultry House
作者
Emil Wilhelm Lehmann / Herbert Howard Alp / Milton Dyer Farrar / Ray Iris Shawl / Willard Jason Corbett / William Barbour Nevens / Alvin Frederick Kuhlman / Paul Hubert Tracy / Tracy Allen Pitzen / Wesley Pillsbury Flint
出版1939
ISBN
OCLC:12699407
主題
Agriculture