000 00269nam a22001217a 4500
020 _a8127224596
082 _a631.6
100 _aLenka, D.
245 _aIrrigation and Drainage
250 _a3 rd
260 _aLudhiana
_bKalyani Publishers
_c1991
300 _a327 pp
999 _c88249
_d88249