000 nam a22 4500
082 _aRID.631.7
_bR6p
_d1979
100 _aRoyal Irrigation Department
245 _aPhitsanalok Irrigation Project : On - Farm constraction 1978
_bReport no.26
260 _aBangkok
_bRoyal Irrigation Department
_c1979
942 _c12
999 _c2833
_d2833