1. Sr. Sci., Directorate of Water Mgmt. Res., WALMI Complex, Phulwari Sharif, Patna - 801 505, India.
2. AICTE Emeritus Fellow, Dept. of Irrig. and Drain. Engrg., G. B. Pant Univ. of Agric. and Technol., Pantnagar - 263 145, Dist. Udham Singh Nagar, India.