Fottland, H., & Skrøppa, T. (1989). The IUFRO 1964/68 provenance experiment with Norway spruce (Picea abies) in Norway: Variation in mortality and height growth = Proveniensforsøket IUFRO 1964/68 med gran (Picea abies) i Norge. Norsk Inst. for Skogforskning.
Chicago-Zitierstil (17. Ausg.)Fottland, Håkon, und Tore Skrøppa. The IUFRO 1964/68 Provenance Experiment with Norway Spruce (Picea Abies) in Norway: Variation in Mortality and Height Growth = Proveniensforsøket IUFRO 1964/68 Med Gran (Picea Abies) I Norge. Ås: Norsk Inst. for Skogforskning, 1989.
MLA-Zitierstil (9. Ausg.)Fottland, Håkon, und Tore Skrøppa. The IUFRO 1964/68 Provenance Experiment with Norway Spruce (Picea Abies) in Norway: Variation in Mortality and Height Growth = Proveniensforsøket IUFRO 1964/68 Med Gran (Picea Abies) I Norge. Norsk Inst. for Skogforskning, 1989.