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Commercial Fertilizers
作者
Charles Williams Woodworth / George Wright Shaw / Herbert Andrew Hopper / John Eliot Coit / John Sedgwick Burd / Leroy Anderson / Ralph Eliot Smith / Stanley Sawyer Rogers / Amos John Gaumnitz / Walter Eugene Packard
出版1909
ISBN
UIUC:30112019430757
主題
Agricultural experiment stations
Commercial Fertilizers
作者
Charles Williams Woodworth / George Wright Shaw / Herbert Andrew Hopper / John Eliot Coit / John Sedgwick Burd / Leroy Anderson / Ralph Eliot Smith / Stanley Sawyer Rogers / Amos John Gaumnitz / Walter Eugene Packard
出版1909
ISBN
UIUC:30112019430757
主題
Agricultural experiment stations
How to Increase the Yield of Wheat in California
作者
Charles Williams Woodworth / Frederic Theodore Bioletti / George Wright Shaw / Henry Josef Quayle / Herbert Andrew Hopper / John Eliot Coit / John Sedgwick Burd / Stanley Sawyer Rogers / William Brodbeck Herms / Amos John Gaumnitz / Walter Eugene Packard
出版1910
ISBN
UIUC:30112074270940
主題
Agriculture
University Farm School, Davis, California
作者
Charles William Woodworth / Ernest Brown Babcock / Frederic Theodore Bioletti / Frederick Llewellyn Griffin / George Wright Shaw / Harold Child Bryant / University of California, Davis / Amos John Gaumnitz / Leon O. Bonnet / William Granville Hummel
出版1913
ISBN
UIUC:30112019437265
主題
Agricultural education
A Study of California Wheats
作者
Amos John Gaumnitz
出版1906
ISBN
UCAL:C2880516