Wennstrom, U. (2001). Direct seeding of Pinus sylvestris (L.) in the boreal forest using orchard or stand seed.
Lua i Stíl Chicago (17ú heag.)Wennstrom, Ulfstand. Direct Seeding of Pinus Sylvestris (L.) in the Boreal Forest Using Orchard or Stand Seed. 2001.
Lua MLA (8ú heag.)Wennstrom, Ulfstand. Direct Seeding of Pinus Sylvestris (L.) in the Boreal Forest Using Orchard or Stand Seed. 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.