Lesson helps in agricultral geology, for use with Emerson's Agricultural geology (Wiley & sons)
Smith, John E. 1878-
Lesson helps in agricultral geology, for use with Emerson's Agricultural geology (Wiley & sons) by John E. Smith. - [Ames, Iowa?] 1936. - 48 p. illus. (map) 23 cm.
"References": p. 8, 42-43.
gs 37000221
Geology.
Soils.
QE33 / .S57
Lesson helps in agricultral geology, for use with Emerson's Agricultural geology (Wiley & sons) by John E. Smith. - [Ames, Iowa?] 1936. - 48 p. illus. (map) 23 cm.
"References": p. 8, 42-43.
gs 37000221
Geology.
Soils.
QE33 / .S57