類似資料

• The effects of five different levels of fertilizer nitrogen on modulation, growth and yield of cowpea (vigna unguiculata (L) Walp.) on Oxisol /
  著者:: Tam, Voon Cheong.
  出版事項: (1978)
• Observations on three bruchids associated with cowpea in Northern Nigeria /
  著者:: Booker, R. H.
  出版事項: (1967)
• Plant density studies with dwarf cowpea /
  著者:: Lim, Deanna.
  出版事項: (1970)
• Pests of cowpea and their control in Northern Nigeria /
  著者:: Booker, R. H.
  出版事項: (1965)
• The effects of different mulches on soil moisture, soil temperature, some soil properties and yields of seven cowpea varieties /
  著者:: Jaman Haji Osman.
  出版事項: (1980)