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- [5] MEASUREMENT OF FROST-HARDINESS IN 3 DOUGLAS FIR AT 3 NURSERIES BY AN ELECTRICAL METHOD FORESTRY CHRONICLE, 1970, 46 (01): : 65 - +
- [6] INFLUENCE OF MOISTURE SUPPLY, TEMPERATURE, AND LIGHT ON FROST-HARDINESS CHANGES IN DOUGLAS-FIR SEEDLINGS CANADIAN JOURNAL OF BOTANY, 1969, 47 (11): : 1765 - +
- [7] Inbreeding effects on the spring frost hardiness of coastal Douglas-fir CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 1996, 26 (06): : 1049 - 1054
- [8] CANKER DISEASES OF DOUGLAS-FIR SEEDLINGS IN OREGON AND WASHINGTON BAREROOT NURSERIES CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 1988, 18 (08): : 1053 - 1058
- [9] NITROGEN REQUIREMENTS IN YOUNG DOUGLAS-FIR OF THE PACIFIC NORTHWEST FERTILIZER RESEARCH, 1988, 15 (02): : 173 - 179
- [10] Field assessment of Douglas-fir somatic and zygotic seedlings with respect to gas exchange, water relations, and frost hardiness CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 2002, 32 (10): : 1822 - 1828