Makhmatmurodov Alisher Ulmasovich and Mashrabov Mansur Ibrahimovich, “YIELD OF CORN GRAIN AT VARIOUS FORMS AND RATES OF PHOSPHORUS FERTILIZERS ON THE UNWASHED AND WASHED OFF TYPICAL GRAY SOILS”, Euro. J. Agri. Rur. Edu., vol. 2, no. 2, pp. 3-5, Feb. 2021.