| Journal Articles 1991 |
| M.C. Porwal and P.S. Roy, 1991. Attempted under-storey characterisation using aerial photographs in Kanha National Park (Madhya Pradesh) India. Environmental Conservation 18(1): 45-50. |
| M.C. Porwal and P.S. Roy, 1991. Seasonal changes in spectral properties of vegetation. Asia Pacific Journal of Remote Sensing 4(1): pp 129-135. |
| Mishra, A.K., and Sridhar, P.N., 1991, The Retrieval of Ground Reflectance for the Red and Near Infra-red Bands using IRS-1A(LISS-1) data. Asian Pacific Remote Sensing Journal,4,117-122. |
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N.V. Madhavan Unni, P.S. Roy, R.N. Jadhav, A.K. Tiwari, S. Sudhakar, B.K. Ranganath, S.L. Dabral, 1991. IRS-1A Applications in Forestry. Current Science 61(3 & 4):189-192. |
| P.S. Roy, B.K. Ranganath, P.G. Diwakar, T.P.S. Vohra, S.K. Bhan, I.J. Singh and V.C. Pandian, 1991. Tropical Forest type mapping and monitoring using remote sensing. International Journal of Remote Sensing Vol. 12 No. 11, pp 2205-2225 |
| P.S. Roy, D.N. Pant and S. Jonna, 1991. Evaluation of grasslands and spectral reflectance relationship to its biomass in Kanha National Park (M.P.). Geocarto-S.No. Details International Journal of Remote Sensing Vol. 6 No. 1 pp 39-45. |
| P.S. Roy, K.K. Das and K.S.M. Naidu, 1991. Forest cover and Landuse mapping in Karbi Anglong and North Cachar Hill districts of Assam using Landsat MSS data. Journal of the Indian Society of Remote Sensing (Photonirvachak) Vol. 19 No. 2, pp 113-123 |
| Roy, P.S., Ranganath, B.K., Diwakar, P.G., Vohra, T.P.S., Singh, I.J. and Pandian, V.C. (1991). Tropical forest type mapping and monitoring using remote sensing, International Journal of Remote Sensing 12(11): 2205-2225. |
