Observations on acarofauna in four apple orchards of Central Greece. II. Green cover and hedges as potential sources of phytoseiid mites (Acari: Phytoseiidae)
  Observations on acarofauna in four apple orchards of central Greece. I. Incidence of pedoclimatic conditions and agricultural techniques on phytoseiid mites (Acari: Phytoseiidae)