Svalof 1886-1946 : history and present problems /

類似資料

• International rules for seed testing : annexes 1976, adopted at the seventeenth International Seed Testing Congress, Warsaw 1974, to become effective on 1 July 1976 in the Northern hemisphere and on 1 January 1977 in the Southern Hemisphere.
  出版事項: (1976)
• Neutron irradiation of seeds : report of a study-group meeting on coordination of research in the use of neutrons in seed irradiation held in Vienna, 25-29 July 1966 and of a working meeting on recommendations for a neutron seed irradiation programme held in Vienna, 12-16 December 1966.
  出版事項: (1967)
• Advances in research and technology of seeds.
  出版事項: (1975)
• Certification of source-identified Canadian tree seed under the O.E.C.D. scheme /
  著者:: Piesch, R. F.
  出版事項: (1976)
• Testing of agricultural seeds moving in international trade /
  出版事項: (1955)