Law of diminishing returns
By: edited by W.J. Spillman.
Contributors: Spillman, W. J.; Lang, Emil, 1883-
Series: New-world agriculture series
Publisher: World Book Company
Published: 1924
Place of publication: Yonkers-on-Hudson, N.Y
Language: eng
Number of pages: 178
Subjects: Agriculture -- Economic aspects.
Other titles: Landwirthschaftliche Jahrbücher.; Law of diminishing increment.; Law of the soil.
Notes: "Part II is a translation, by the author, of part I ... of an article by Dr. Emil Lang in the Landwirthschaftliche Jahrbücher, vol. LV, 1920, entitled 'Der Ertragsverlauf in der Landwirthschaft bei steigendem Aufwand...'"--Pref.

Includes bibliographical references and index.
Table of contents: value: Part one: The law of the diminishing increment / by W.J. Spillman; value: Part II. The law of the soil / by Emil Lang.