TY JOUR TI Agricultural chemization in USSR: causes and consequences KW food KW agriculture KW theory KW practice KW Liebig KW Bussengo KW Pryanishnikov KW Williams KW institutional traps KW provisions on scientific discussion KW agrochemistry KW hunger KW political economy KW agricultural policy KW fertile lands KW war JO National Security and Strategic Planning AU Tarkhanov, O.V. PY 2021 IS 2021 PB Strategy of the Future