978 resultados para FIELD SURVEY
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Photoprinted.
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Survey organization: The Division of field studies, Institute of educational research, Teachers' college, Columbia university, George D. Strayer, director of survey. cf. p. [3].
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"Advance sheets--field operations of the Bureau of Soils, 1918"--Cover.
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Chiefly tables.
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"HWRIC project number 87-034."
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"Project 87/064."
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"May 5, 1956."
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September 26, 1959.
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"October 20, 1962."
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September 22, 1962.
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September 13, 1958.
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May 9, 1953.
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April 12, 1958.
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"Reprinted from the Report on field operations of the Bureau of Soils for 1901."
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[Advance sheets--Field Operations of the Bureau of Soils, 1904]