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CONCRETIONS WITH FOSSILS OF THE ULYANOVSK REGION - A NEW KIND OF JEWELRY-ORNAMENTAL RAW MATERIALS by D. A. Petrochenkov
Published 2018-04-01
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COLLECTION AND JEWELLERY CASSITERITES OF THE IULTIN DEPOSIT by D. A. Petrochenkov
Published 2018-02-01
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Ecological estimation of using ammonites in jewelry and interior goods by D A Petrochenkov
Published 2011-12-01
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Mineral composition and gemological characteristics of the fossil marine reptiles of the Ulyanovsk region by D. A. Petrochenkov
Published 2018-11-01
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Mineral and structural features of jewelery wood tin by D. A. Petrochenkov
Published 2017-08-01
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Mineral composition and gemological characteristics of the petrified wood of the Ulyanovsk region by D. A. Petrochenkov
Published 2019-01-01
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MINERAL COMPOSITION AND STRUCTURAL FEATURES OF JEWELER AMMONITES FROM KOSTROMA REGION by D. A. Petrochenkov
Published 2017-04-01
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Gemological characteristics of jewelry-ornamental septaria of the Ulyanovsk region by D. A. Petrochenkov
Published 2019-05-01
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Mineralogy of interior jewellery ammonites of the Samara region by D. A. Petrochenkov, E. Yu. Baraboshkin
Published 2022-10-01
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