Cotter, Charles H.; Dean, J. R. (December 1966). "Down to the Sea: A Century of Oceanography". The Geographical Journal. 132 (4): 560. doi:10.2307/1792593. ISSN0016-7398. JSTOR1792593.
Cotter, Charles H.; Dean, J. R. (December 1966). "Down to the Sea: A Century of Oceanography". The Geographical Journal. 132 (4): 560. doi:10.2307/1792593. ISSN0016-7398. JSTOR1792593.
Cotter, Charles H.; Dean, J. R. (December 1966). "Down to the Sea: A Century of Oceanography". The Geographical Journal. 132 (4): 560. doi:10.2307/1792593. ISSN0016-7398. JSTOR1792593.
Kofoid, Charles A. (1910). The biological stations of Europe. G.P.O. OCLC7310523.