1. Res. Fellow, Dept. of Irrig. and Drain. Engrg., Coll. of Technol., G.B. Pant Univ. of Agr. and Technol., Pantnagar–263 145 (U.P.), India.
2. Prof., Dept. of Irrig. and Drain. Engrg., Coll. of Technol., G.B. Pant Univ. of Agr. and Technol., Pantnagar (U.P.), India.
3. Emeritus Fellow, A.I.C.T.E., Coll. of Technol., G.B. Pant Univ. of Agr. and Technol., Pantnagar (U.P.), India.