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Category:Diatomaceae of Philadelphia

Plates from: The Diatomaceæ of Philadelphia and Vicinity

Author: Charles Sumner Boyer, A.M., F.R.M.S. (1856-1928)

J. B. Lippincott Company, Philadelphia, 1916

Public domain

The author died in 1928, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or less.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1924.

Media in category "Diatomaceae of Philadelphia"

The following 41 files are in this category, out of 41 total.