901 resultados para Research progress
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For earlier reports see U. S. Public Health Service. Publications nos. 738, 812, 914, 1546 and 1720. (RA 11 B155-)
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Mode of access: Internet.
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Mode of access: Internet.
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Kenneth S. Wherry, chairman of subcommittee.
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Bibliography: p. 48.
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Title page printed in red and black.
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Mode of access: Internet.
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Caption title.
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"B-248911."
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Subtitle varies.
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At head of title: University of Illinios. Agricultural college and experiment station.
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"February 1968."