The identification of rock types
By: Reported by D. O. Woolf.
Contributors: Woolf, Donald Oliver, 1898-
Edition: Rev. ed. by the Division of Physical Research.
Publisher: U.S. Govt. Print. Off.
Published: 1960
Place of publication: Washington
Language: eng
Number of pages: 17
Subjects: Rocks -- Classification and nomenclature.
Notes: "Originally published in public roads, vol. 26, no. 2, June 1950."