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4Опубликовано 1997“...Smithsonian Institution Libraries...”
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5Опубликовано 1998“...Smithsonian Institution Libraries...”
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11Опубликовано 1998“...Smithsonian Institution Libraries...”
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14Опубликовано 1992“...Smithsonian institution libraries and the National science foundation...”
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15по Gromov I. M., Polyakov I. Ya“...Smithsonian institution libraries and the National science foundation...”
Опубликовано 1992
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16по Hennin G. W.“...Smithsonian Institution Libraries and National Science Foundation...”
Опубликовано 1992
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17по Heptner V. G. , Sludskii A. A.“...Smithsonian Institution Libraries and National Science Foundation...”
Опубликовано 1992