Howe, H. E. (1926). Chemistry in the world's work. D. Van Nostrand company.
Lua i Stíl Chicago (17ú heag.)Howe, Harrison Estell. Chemistry in the World's Work. New York: D. Van Nostrand company, 1926.
Lua MLA (8ú heag.)Howe, Harrison Estell. Chemistry in the World's Work. D. Van Nostrand company, 1926.
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