"Professional paper.""October 29, 1918."Caption title.Bibliography: p. 28.Mode of access: Internet
Cover title.Includes bibliographical references and index.Mode of access: Internet
"Professional paper.""March 13, 1918."Caption title.Bibliography: p. 61-64.Mode of access: Internet
"Professional paper.""October 25, 1920."Caption title.Bibliography: p. 24-25.Mode of access: Interne...
Caption title: Apple spraying experiments in 1915.Includes bibliographical references.Mode of access...
Caption title: Spraying experiments and studies on certain apple diseases in 1913.Includes bibliogra...
"Contribution from the Bureau of Plant Industry."Cover title.Includes bibliographical references.Mod...
"In cooperation with the Division of Fruits and Vegetables of the Bureau of Agricultural Economics."...
Caption title."Professional paper.""August 9, 1920."Bibliography: p. 41-42.Mode of access: Internet
"Contribution from the Bureau of Entomology."Caption title.Bibliography: p.[7]-[8].Mode of access: I...
"August 9, 1918."Caption title."Professional paper."Bibliography: p. 20.Mode of access: Internet
"Professional paper."Caption title."December 15, 1919."Bibliography: p. 34-35.Mode of access: Intern...
"Professional paper.""February 11, 1918."Caption title.Bibliography: p. 16.Mode of access: Internet
"Reprinted from Orcharding, Massachusetts agriculture series, no. 2."Mode of access: Internet
Cover title.Presented as thesis (Ph. D.)--University of Wisconsin--Madison, 1918.Bibliography: p. 70...
"Professional paper.""January 18, 1917."Caption title.Includes bibliographical references (p. 64-66)...
Cover title.Includes bibliographical references and index.Mode of access: Internet
"Professional paper.""March 13, 1918."Caption title.Bibliography: p. 61-64.Mode of access: Internet
"Professional paper.""October 25, 1920."Caption title.Bibliography: p. 24-25.Mode of access: Interne...
Caption title: Apple spraying experiments in 1915.Includes bibliographical references.Mode of access...
Caption title: Spraying experiments and studies on certain apple diseases in 1913.Includes bibliogra...
"Contribution from the Bureau of Plant Industry."Cover title.Includes bibliographical references.Mod...
"In cooperation with the Division of Fruits and Vegetables of the Bureau of Agricultural Economics."...
Caption title."Professional paper.""August 9, 1920."Bibliography: p. 41-42.Mode of access: Internet
"Contribution from the Bureau of Entomology."Caption title.Bibliography: p.[7]-[8].Mode of access: I...
"August 9, 1918."Caption title."Professional paper."Bibliography: p. 20.Mode of access: Internet
"Professional paper."Caption title."December 15, 1919."Bibliography: p. 34-35.Mode of access: Intern...
"Professional paper.""February 11, 1918."Caption title.Bibliography: p. 16.Mode of access: Internet
"Reprinted from Orcharding, Massachusetts agriculture series, no. 2."Mode of access: Internet
Cover title.Presented as thesis (Ph. D.)--University of Wisconsin--Madison, 1918.Bibliography: p. 70...
"Professional paper.""January 18, 1917."Caption title.Includes bibliographical references (p. 64-66)...
Cover title.Includes bibliographical references and index.Mode of access: Internet
"Professional paper.""March 13, 1918."Caption title.Bibliography: p. 61-64.Mode of access: Internet
"Professional paper.""October 25, 1920."Caption title.Bibliography: p. 24-25.Mode of access: Interne...