Для цитирования:

Петроченков Д.А. Минеральный состав и геммологические характеристики окаменелостей морских рептилий Ульяновской области. Proceedings of Higher Educational Establishments: Geology and Exploration. 2018;(5):12-16. https://doi.org/10.32454/0016-7762-2018-5-12-16

For citation:

Petrochenkov D.A. Mineral composition and gemological characteristics of the fossil marine reptiles of the Ulyanovsk region. Proceedings of higher educational establishments. Geology and Exploration. 2018;(5):12-16. (In Russ.) https://doi.org/10.32454/0016-7762-2018-5-12-16