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N.P. Singh is presently working as a Principal Scientist and Head, Division of Agronomy, School of Agricultural Science and Rural Development, Nagaland University, Medziphema. He completed his M.Sc. and Ph.D. in Agronomy from the Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. He is a recipient of District Merit Fellowship and BHU Fellowship. He has published 38 research papers and 70 popular articles. He has also attended 76 conferences at regional, national and international levels.

Prabhat Kumar Hajra (b. January 28, 1940) received his early education at Sekenderpur, a village in Hooghly District of West Bengal and graduation from Calcutta University.  He obtained Masters Degree in Botany from Guahati University and Ph.D. degree from the same university.  From 1961 to 1992 he worked in Central National Herbarium, Calcutta, Eastern Circle, Shillong, and Northern Circle, Dehradun of Botanical Survey of India in different capacities.  He established the Sikkim Himalayan Circle of Botanical Survey of India.  He joined the Ministry of Environment and Forest, Government of India as Director Biosphere Reserve and worked during the period 1992-1993.  HE then rejoined Botanical Survey of India as Director in 1993 and retired on supre-annuation in 1998.  Since 1998 he is involved in a project sponsored jointly by the Department of Space and Biotechnology, Government of India as one of the collaborators.  He has authored manmy publications of botanical interest such as Plant wealth of Nanda Devi Biosphere Reserve, Botany of Kaziranga and Manas, Brahmakamal and its allies etc.  He has also edited a large number of books on the Flora of India.  He is the author of over 100 publications in various scientific journals.  During his intensive field survey all over India, he discovered numerous plant species that are new to science.  He has also extensively toured all over the world in connection to his scientific pursuit.  He is the author of several popular books in English as well as Hindi.