In the northern limit of steppes.Research and materials.1. Algas Steppes

Prozorovsky, N.A.On the northern limit steppes / N.A.Prozorovsky.- Ryazan: B. and.- (Research and Massmenazan Regional Mid-Town Museum).Electronic Source: PB1: Algas Steppes.- 1930. -77 p., 1 l.cards., VI s.Il., 2 l.Table.: Tab .. - (Research and Materialsazan Regional Mid-Town Museum; Vol. 6).Electronic Source: PB