147 resultados para synthetic varieties
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Mode of access: Internet.
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Bibliography: p. 58-59.
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Mode of access: Internet.
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Cover title.
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Bibliography: p. 245-252.
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Omslagtitel.
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"September 1960 [OTI Extension Issuance Date]"--Cover.
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Mode of access: Internet.
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Bibliography: p. 169-193.
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Mode of access: Internet.
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Errata slip inserted in v. 1.
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Mode of access: Internet.
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Mode of access: Internet.
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"Prepared for Office of Coal Research, Department of Interior."
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Item 1013-A, 1013-B (microfiche)