Stepura
Evgenij Evgenyevich,
graduate, Esenin Ryazan state university,
e-mail: vdv-rz@rambler.ru

Degradation processes of soils and lands of the Ryazan region
Vinogradov D., Gusev V., Kuznetcov N., Stepura Е., Sinigovec M.
         2013,    N 2