Charles Shaffer Simmons / Arthur Eugene Shearin / Paul Raymond McMiller / Samuel Nelson Hill / G. Donald Sherman / Iver John Nygard / Eric Kneen / Olaf Soine / Samuel Labovitz

ERDC:35925002002639

Soil surveys

Charles Edwin Kellogg / Iver John Nygard

UVA:X030493002

Soils

Iver John Nygard

UOM:39015030836830

Bogs

Iver John Nygard

UIUC:30112018393089

Soils

Iver John Nygard

OCLC:459875414

Iver John Nygard

UIUC:30112019696555

Soils

Iver John Nygard

MINN:319510022076355

Peat

Charles Edwin Kellogg / Iver John Nygard

UVA:X030493002

Soils

Iver John Nygard

MINN:319510022076355

Peat

Iver John Nygard

UOM:39015030836830

Bogs

Edmund Burke / Montana Agricultural Experiment Station / Iver John Nygard / William Mckinley Martin

OCLC:19538817

Phosphatic fertilizers

Dorothy Douglass Langley / E. A. Starch / Edmund Burke / Frank M. Harrington / Harvey Ellison Murdock / Jesse Robinson Green / Jessie Emma Richardson / John Oscar Tretsven / Louis Vinke / Barton Bergstedt / Erlene Jacobs Andes / Helen L. Mayfield / W. F. Dickson / William Mckinley Martin / Iver John Nygard

OCLC:11307230

Beef cattle

Iver John Nygard

OCLC:19538216

Soils

Charles Shaffer Simmons / Arthur Eugene Shearin / Paul Raymond McMiller / Samuel Nelson Hill / G. Donald Sherman / Iver John Nygard / Eric Kneen / Olaf Soine / Samuel Labovitz

ERDC:35925002002639

Soil surveys

Iver John Nygard

UIUC:30112018393089

Soils

Charles Edwin KELLOGG (and NYGARD (Iver John))

OCLC:752758568

Charles Edwin Kellogg / Iver John Nygard

OCLC:1039868539

Charles Edwin Kellogg / Gustaf Adolph Pearson / Iver John Nygard

LCCN:agr51000213

Forest management

Charles Edwin Kellogg / Iver John Nygard

OCLC:3226170

Soils

Ben Henry Pubols / Charles Edwin Kellogg / Gustaf Adolph Pearson / Lazar Volin / William Webster Diehl / Iver John Nygard

LCCN:agr50000686

Agriculture

Paul Raymond McMiller / Lauffer, Max A / Younge, Ouder

OCLC:9910955

Soil surveys

Alwin William Goke / Carl Spencer Pearson / Charles Shaffer Simmons / Gustavus Adolphus Swenson / Raymond Earl Storie / Robert Eddins Devereux / Samuel Rankin Bacon / Thomas Edward Beesley / Alfred Conrad Anderson / Arthur Eugene Shearin / C. A. Hollopeter / Carl Burton Beadles / Edward Shulkcum / T. K. Popov / Blonnie Hugh Williams / C. F. Fisher / Jay Clarke Bryant / Paul Raymond McMiller / William Isaac Watkins / Samuel Nelson Hill / Walter Jefferson Camp / Clarence Lounsbury / G. Donald Sherman / Iver John Nygard / Robert Rankin Findley / Wilber Secor / Eric Kneen / Leonard Geoffrey Brackeen / Maurice Edward Swann / Olaf Soine / Hoyt Sherard / Samuel Labovitz

LCCN:agr40000004

Geology

Charles Shaffer Simmons / Arthur Eugene Shearin / Paul Raymond McMiller / Samuel Nelson Hill / G. Donald Sherman / Iver John Nygard / Eric Kneen / Olaf Soine / Samuel Labovitz

LCCN:agr41000211

Soil surveys

Mark Herbert Brown / Iver John Nygard

LCCN:agr41000288

Erosion