Past and present agronomic assistance in the Ryazan district, depending on the soil-climatic and living conditions of the province: a general agronomical report to the Economic Council and the Uyezd Zemstvo Assembly of the regular session of 1912, compiled by the Office of the Senior Instructor for Forage Culture N.S. Zakharov. - Ryazan: Typography BV Tarasova, 1912. -141, III p. : tab. ; 26 cm. -
1. Territory (collection). 2. Territory of Russia: Ryazan Region (collection). 3. Natural wealth of Russia (collection). 4. Agriculture - Ryazan Province.