1. Reducing pressure on natural forests through high-yield forestry
2. Ecophysiology of Northern Spruce Species. The Performance of Planted Seedlings;Grossnickle,2000
3. Applied Forest Tree Improvement;Zobel,1984
4. Quality Control in the Production of Forest Planting Stock
5. Seeding and Planting, a Manual for the Guidance of Forestry Students, Foresters, Nurserymen, Forest Owners, and Farmers;Toumey,1916