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2. Ginseng cultivation under artificial shade;Currie,1980
3. Estimation of leaflet, leaf, and total leaf area of Panax quinquefolius L. using linear measurements;Hughes;J. Am. Soc. Hort. Sci.,1981
4. A psychrometer system for micrometeorology profile determination;Lourence;J. Appl. Meteorol.,1969
5. Some aspects of the Canadian culture of ginseng (Panax quinquefolius L.), particularly the growing environment;Proctor,1980