Lesson helps in agricultural geology
Subtitle: for use with Emerson's Agricultural geology
By: by John E. Smith.
Contributors: Emerson, Frederick V. 1871-1919.
Publisher: Wiley & sons
Published: 1936
Place of publication: [Ames, Iowa?]
Language: eng
Number of pages: 48
Subjects: Geology.; Soils.
Notes: "References": p. 8, 42-43.