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1Cyhoeddwyd 1986“...Science Information Publishing Centre, Dept. of Scientific and Industrial Research,...”
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2Cyhoeddwyd 1970“...Israel Program for Scientific Translations; [available from the U.S. Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.],...”
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3gan Ravich, M. G. (Mikhail Grigorʹevich)“...Israel Program for Scientific Translations [available from the U.S. Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.],...”
Cyhoeddwyd 1969
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