736 resultados para Research issues
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Vol. 42-67 omitted in numbering. Issues for 1967 have no vol. numbering. Vols. for 1968-71 called v. 68-71 to coincide with date.
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Description based on: EPA-650/1.
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Some issues lack title.
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Publication suspended during 1924.
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Mode of access: Internet.
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"Order code IB90031."
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Includes indexes.
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"Serial no. 97-R."
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"September 1997"--T.p.
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Editors: 1911-12, L. G. Carr Laughton.--1913-22, R. C. Anderson.--1923- W. G. Perrin.
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Description based on: 1953.
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Published by: Bureau of Educational Research and Service, 1957-1961
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Historical abstracts. Part B. Twentieth century abstracts
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Issues for Nov. 1966-Dec. 1967 have no vol. numbering but constitute v. 1-2.
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No issue for Dec. 1924.