Origin of pest, parasite,diseases and weed problems

Eitemau Tebyg

• Origins of pest, parasite, disease and weed problems
  gan: Cherrett, J M
  Cyhoeddwyd: (1977)
• Aquatic weeds: their menace and control
  gan: Gupta, O P
  Cyhoeddwyd: (1979)
• PARASITIC WEEDS OF THE WORLD: BIOLOGY AND CONTROL
  gan: PARKER, C, et al.
  Cyhoeddwyd: (1993)
• Weed destruction: a farmers and students guide
  gan: Evans, Stanley A
• WEEDS
  gan: ARACHI,J.X
  Cyhoeddwyd: (1960)