Marvin, C. F. (1910). Instrutions for measuring snowfall with the Mervin density-of-snow gage. [s.n.].
Cita Chicago Style (17a ed.)Marvin, C. F. Instrutions for Measuring Snowfall with the Mervin Density-of-snow Gage. Washington: [s.n.], 1910.
Cita MLA (9a ed.)Marvin, C. F. Instrutions for Measuring Snowfall with the Mervin Density-of-snow Gage. [s.n.], 1910.
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