Bulletin Samara State Agricultural AcademyBulletin Samara State Agricultural Academy1997-32252782-4225Samara State Agrarian University23868VLIYaNIE SEVOOBOROTOV, SISTEM OSNOVNOY OBRABOTKI, UDOBRENIY NA PRODUKTIVNOST' SEL'SKOKhOZYaYSTVENNYKh KUL'TURKarginV I-MandrovN P-15122006410010111032020Copyright © 2006, Kargin V.I., Mandrov N.P.2006