000 00242 a2200109 4500
080 _a631.672.2(063)
_bI 39 P
245 1 _aProceedings
260 _aNew Delhi
_bI.C.A.R.
_c1970
650 _aTubewell Technology
100 _a
_d
901 _a105573
999 _c45271
_d45271