We wish to acknowledge the help extended by Dr. N. Subba Rao, Mr. Krishnamachari, Mr. A. Inderjeet Singh Seghal, Mr. Arun Kumar Thakur of Bio-Informatics Centre, Jawaharlal Nehru University in many ways like Fax, email and CD-ROM services. Help received from INSDOC, NIC, Mr. S. Venkatesan, Mr. N. Madhavan, Renoj J. Theyyen, Ms. Anuradha Verma and Ms. Manju Rawat, School of Environmental Sciences, Jawaharlal Nehru University, New Delhi are also gratefully acknowledged.