00580nam a2200169 a 450000100080000000500110000800800410001910000180006024501100007826000960018830000090028449000430029365000230033665000160035965300170037570000180039212920702009-08-11       1980    bl uuuu     u0uu1 u    #d1 aRADWAN, M. A.  aEffects of different sources of fertilizer nitrogen on growth and nutrition of western hemlock seedlings.  aPortland: USDA. Forest Service, Pacific Northwest Forest and Range Experiment Stationc1980  a15p.  a(USDA. For. Serv. Res. Paper PNW-267).  aTsuga heterophylla  aNitrogênio  aFertilizacao1 aDeBELL, D. S.