(The Population Density of the Large Pine Weevil (Hylobius abietis L.) and the Extent of Damage Done by it in Scotch Pine (Pinus sylvestris L.) Plantation in Dependance on the Time of Cutting)

1984

1 Abb., 1 Tab., 8 Lit. Ang.

Unselbständiges Werk

1033

200005450