Petrochenkov, D. A. (2019). Mineral composition and gemological characteristics of the petrified wood of the Ulyanovsk region. Sergo Ordzhonikidze Russian State University for Geological Prospecting.
Chicago Style (17th ed.) CitationPetrochenkov, D. A. Mineral Composition and Gemological Characteristics of the Petrified Wood of the Ulyanovsk Region. Sergo Ordzhonikidze Russian State University for Geological Prospecting, 2019.
MLA (9th ed.) CitationPetrochenkov, D. A. Mineral Composition and Gemological Characteristics of the Petrified Wood of the Ulyanovsk Region. Sergo Ordzhonikidze Russian State University for Geological Prospecting, 2019.
Warning: These citations may not always be 100% accurate.