O.E.C.D. scheme for the varietal certification of sugar beet and fodder beet seed moving in international trade. - Organisation for Economic Co-operation and Development (Paris : Organization for Economic Co-operation and Development ; [London : H.M.S.O.], 1970)
"Text of the rules and directions for the scheme, as established by the OECD Council Decision [C(70)8(Final)] of 11th February, 1970."
Keywords: Sugar beet -- Seeds -- Certification; Mangel-wurzel -- Seeds -- Certification