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Application filed by Ю.В. Ланге, Н.П. ЧеботаревfiledCriticalЮ.В. Ланге
Priority to SU4689ApriorityCriticalpatent/SU4233A1/en
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Publication of SU4233A1publicationCriticalpatent/SU4233A1/en
Investigating Or Analysing Materials By Optical Means
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Tiaio-литографи «Красный Печатник. Ленинград, МелчДународный, 75. к патенту Ю, В. ЛДНГЕ и Н, П, № 4233 HEBOTRPEBRTiaio-lithograph Red Printers. Leningrad, MelchDunarodny, 75. to the patent of Yu, V. LDNGE and N, P, No. 4233 HEBOTRPEBR
SU4689A1925-09-161925-09-16
Device for determining the degree of water permeability of the dam body
SU4233A1
(en)