Fehlberg, F. J. (1930). The effect of coniferous litter on soil moisture, germination survival and seedling development of Norway spruce and red pine.
Chicago-referens (17:e uppl.)Fehlberg, Frederick J. The Effect of Coniferous Litter on Soil Moisture, Germination Survival and Seedling Development of Norway Spruce and Red Pine. 1930.
MLA-referens (8:e uppl.)Fehlberg, Frederick J. The Effect of Coniferous Litter on Soil Moisture, Germination Survival and Seedling Development of Norway Spruce and Red Pine. 1930.
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