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Publication of JPS57163728UpublicationCriticalpatent/JPS57163728U/ja
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ЗЗЯВИТЦ.'!Ь В. А. Солнцев 11йН11Т1Ш^ПК!>&^^^^ t^ИSЛИor:I^;, Ленинградский о'рдена Ленина электротехнический институт имени В. И. Уль нова (Ленина)