Chen, P. S. (1950). Syntans and newer methods of tanning. The Chemical Elements.
Cita Chicago Style (17a ed.)Chen, Philip Stanley. Syntans and Newer Methods of Tanning. South Lancaster, MA: The Chemical Elements, 1950.
Cita MLA (9a ed.)Chen, Philip Stanley. Syntans and Newer Methods of Tanning. The Chemical Elements, 1950.
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