000 00295nam a2200109Ia 4500
008 140917b1985 xxu||||| |||| 00| 0 eng d
082 _a338.954, RAO
100 _aV K r V Rao
245 _aValves and Economic development
260 _aNew Delhi :
_bVikas Pub.,
_c1985
700 _aRao, V K r V
999 _c214289
_d214289