Agoshkov M. I., Nikanorov V. I., Panfilov E. I., Ryzhov V. P. et al. In Russian.

Agoshkov M. I., Nikanorov V. I., Panfilov E. I., Ryzhov V. P. et al. In Russian./Agoshkov M. I., Nikanorov V. I., Panfilov E. I., Ryzhov V. P. i dr. Tekhniko-ekonomicheskaya otsenka izvlecheniya poleznykh iskopaemykh iz nedr. Moscow: Nedra. 1974. 312 p. Please contact us for details on condition of available copies of the book. SKUalb4fae4080d83d3333