000 nam a22 4500
082 _aRID.631.7
_bR6p
_d1977
100 _aRoyal Irrigation Department
245 _aPhitsanulok Irrigation Project : Report on Bid No. P.I.-1-2
_bCanals and structures - part 1
_cReport no.21
260 _aBangkok
_bELC-NK-SEATEC
_c1977
942 _c12
999 _c2788
_d2788