Results of spirit leveling in Delaware, District of Columbia, Maryland, and Virginia, 1896 to 1909, inclusive
By: R.B. Marshall, Chief geographer. Work done in cooperation with the state of Maryland during the entire period and with the state of Virginia in part of 1908.
Series: U.S. Geological survey. Bulletin; no. 434
Publisher: Govt. Print. Off.
Published: 1910
Place of publication: Washington
Language: eng
Number of pages: 74
Subjects: Delaware -- Altitudes.; Washington (D.C.) -- Altitudes.; Maryland -- Altitudes.; Virginia -- Altitudes.
Notes: Issued also as House doc. no. 1015, 61st Cong., 3d sess.
Includes index.