Bulletin Samara State Agricultural AcademyBulletin Samara State Agricultural Academy1997-32252782-4225Samara State Agrarian University23661MARKETING EKOLOGIChESKI ChISTOGO ZERNANekrasovR V-ChumakovaO V-150320061313311032020Copyright © 2006, Nekrasov R.V., Chumakova O.V.2006