The geological history of harbors /
by Nathaniel Southgate Shaler.

APA Citation

Shaler, N. Southgate., Geological Survey (U.S.). (1893). The geological history of harbors. [Washington, D.C.]: Dept. of the Interior, U.S. Geological Survey.

MLA Citation

Shaler, Nathaniel Southgate, 1841-1906, and Geological Survey (U.S.). The Geological History of Harbors. [Washington, D.C.]: Dept. of the Interior, U.S. Geological Survey, 1893.

Warning: These citations may not always be complete (especially for serials).