Fertility Preservation of Soils in Penza Region as the Basis for Russian Food Security Evgenia Kulikova, Galina Velikanova Fertility Preservation of Soils in Penza Region as the Basis for Russian Food Security // Food Policy and Security. — 2015. — Vol. 2. — № 2. — p. 77-86. — doi: 10.18334/ppib.2.2.566 Read more ›
