The successful completion of this work owes a great deal of cooperation provided by Dr. P.S. Roy, Deputy Director (Applications), NRSA, Hyderabad, Dr. C.B.S. Dutt, Deputy Programme Director, ISRO-GBP, Bangalore, Dr. M.S.R. Murthy, Head, Dr. S. Sudhakar, Mr. G.S. Pujar, Mr. Chiranjibi Pattanaik, Forestry & Ecology Division, National Remote Sensing Agency, Hyderabad, Mr. G.V. Subba Raju, Chairman, Mr. Trimurthulu, Vice President, Chemiloids, Vijayawada, Prof. Y.N.R. Varma, P.G. College of Science, Saifabad, Hyderabad, Dr. M. Brahmam, Head, Natural Products Department, Regional Research Laboratory, Bhubaneswar, Dr. P.K. Hajra, Ex Director, Botanical Survey of India, Howrah, Dr. S.N. Jadhav, Conservator of Forests, Anantapur Circle, Dr. M. R. Bhanja, Conservator of Forests, R & D Circle, Hyderabad, Mr. K. Thulsi Rao, Assistant Conservator of Forests, Biodiversity Research Center, Srisailam and we have pleasure in expressing our gratitude to them.