THE INFLUENCE OF WEED INFESTATION ON CROPPING POWER AND GRAIN QUALITY OF SPRING WHEAT IN THE CENTRAL IRAQ Article Shuravilin A.V., Piven Ye.A., Khasun S.O., Bushuev N.N. Вестник Российской академии сельскохозяйственных наук. 2011. P. 51-53
