Jacob Goodale Lipman / Percy Edgar Brown

1020170190 / 9781020170195

Percy Edgar Brown

UIUC:30112019572681

Bacteriology, Agricultural

William Henry Stevenson / Percy Edgar Brown

UIUC:30112019566063

Soils

William Henry Stevenson / Percy Edgar Brown

UIUC:30112019566444

Field experiments

Percy Edgar Brown

UIUC:30112019560769

Agricultural experiment stations

Rudger Harper Walker / Percy Edgar Brown / B. J. Firkins

UIUC:30112019567897

Ion exchange

Percy Edgar Brown

UIUC:30112019565545

Green manuring

Percy Edgar Brown / Alfred Moore O'Neal

UIUC:30112019572632

Soils

Percy Edgar Brown

UIUC:30112019567806

Bacteriology, Agricultural

William Henry Stevenson / Percy Edgar Brown

UIUC:30112019560835

Agricultural experiment stations

Rudger Harper Walker / Percy Edgar Brown

UIUC:30112019568606

Soils

Percy Edgar Brown

UIUC:30112019567608

Bacteriology

Percy Edgar Brown

UIUC:30112019566352

Soil inoculation

William P. Martin / Percy Edgar Brown / Rudger Harper Walker

UIUC:30112019568754

Azotobacter

Percy Edgar Brown / William Vernal Halversen

UIUC:30112019572095

Soil fungi

William Henry Stevenson / Percy Edgar Brown

UIUC:30112019561452

Agricultural experiment stations

Arthur Lawrence Bakke / Bernard Wernick Hammer / John Marcus Evvard / Laurenz Greene / Louis Hermann Pammel / Percy Edgar Brown / Robert Lorenzo Webster / Thomas Joseph Maney / A. J. Hauser / Charlotte Maria King / Jay Brownlee Davidson / M. E. Sar / Frank Bonar Howe

UIUC:30112048271750

Apples

Percy Edgar Brown

UIUC:30112019566105

Liming of soils

William Henry Stevenson / Percy Edgar Brown

UIUC:30112019562062

Agricultural experiment stations

Frederick Burean Smith / Percy Edgar Brown

UIUC:30112019567855

Nitrification

Percy Edgar Brown

UIUC:30112019569117

Bacteriology, Agricultural

Bernard Wernick Hammer / Percy Edgar Brown / Ralph Sydney Potter / Ray E. Neidig / Spencer Ambrose Beach / A. R. Johnson / Edward Henry Kellogg / Frank Wisdom Allen / Robert Shirley Snyder

UIUC:30112019567087

Agriculture

Frederick Burean Smith / Percy Edgar Brown

UIUC:30112019567988

Carbon dioxide

Percy Edgar Brown / Thomas H. Benton

UIUC:30112019567822

Soil microbiology

William Henry Stevenson / Julien L. Boatman / Percy Edgar Brown

UIUC:30112019562039

Agricultural experiment stations

William Henry Stevenson / Percy Edgar Brown / H. W. Reid

OCLC:44945595

Pottawattamie County (Iowa)

Percy Edgar Brown

UIUC:30112019566840

Farm manure

Percy Edgar Brown

UIUC:30112019566733

Legumes

George H. Von Tungeln / Percy Edgar Brown

UIUC:30112019566154

Fertilizers

Percy Edgar Brown

UIUC:30112019571485

Bacteriology, Agricultural