TY - BOOK AU - Varshney, R.S. AU - Gupta,R C . AU - Gupta,S.C. TI - Theory and design of irrigation structures:channels and tubewells vol-1 / SN - 81 85240 47 7 U1 - 627.52 PY - 1992/// CY - Roorkee : PB - Nem Chand And Bros , N1 - *CSS ER -