1. Environmental Plant Production and Marketing;Furuta,1974
2. Root problems in nursery liner production;Harris;Calif. Agric. Ext. AXT,1967
3. Growth of roots and root hairs of pine and hardwood seedlings in the Piedmont;Kozlowski;J. For.,1948
4. Effect of environment and heredity on the root-growth pattern of red pine;Merritt;Ecology,1968