Crosby, W. O. (1886). Geological collections: Mineralogy. The Society.
Lua i Stíl Chicago (17ú heag.)Crosby, William Otis. Geological Collections: Mineralogy. Boston, Mass.: The Society, 1886.
Lua MLA (8ú heag.)Crosby, William Otis. Geological Collections: Mineralogy. The Society, 1886.
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