000 nam a22 4500
245 _aWater resources survey and development plans Chiang Rai province, Thailand : Appendix C pilot schemes
260 _a[Switzerland]
_bElectro-watt/Motor-Columbus Consulting engineers
_c1972
710 _aElectro-watt/Motor-Columbus Consulting Engineers
942 _c22
999 _c4921
_d4921