Bulletin Samara State Agricultural AcademyBulletin Samara State Agricultural Academy1997-32252782-4225Samara State Agrarian University23829VLIYaNIE RAZLIChNYKh SELEKTsIONNYKh GRUPP SVINEY NA IKh PRODUKTIVNOE DOLGOLETIESharymovaN M-ZaspaL F-UkhtverovA M-15062006211211311032020Copyright © 2006, Sharymova N.M., Zaspa L.F., Ukhtverov A.M.2006