Circular to accompany collections illustrating rock-weathering and soil formation which have been prepared by Department of Geology, U.S. National Museum, under direction ofDr. George P. Merrill, Head Curator
Contributors: Merrill, George P. 1854-1929.
Publisher: [s.n.]
Published: 1901
Place of publication: Washington, D.C
Format: Microform
Subjects: Weathering.; Soil formation.