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2. Medicinal Plants of India;Satyavati,1976
3. Indian Medicinal Plants: An Illustrated Dictionary;Khare,2007
4. Status of Collection, Conservation, Trade and Potential for Growth in Sustainable Use of Major Medicinal Plant Species Found in the Great Himalayan National Park and Its Environs in Kullu District of Himachal Pradesh;Tandon,1997
5. Plant Systematics: A Phylogenetic Approach;Judd,1999