Rekomendacii v oblasti udobrenija Rejjnskojj Sel'skokhozjajjstvennojj Palaty v svete soveshhanija 100 Kongessa VDLUFA v Bonn. Ch. I. Pakhotnye ugod'ja
EN
Fertilizer application recomendations of the Rhenish Agricultural Chamber in the light of proceedings of the 100th VDLUFA Congress in Bonn. Part I. Arable land