000 00247nam a22001097a 4500
005 20250829163338.0
082 _a620.41016
_bUNE
245 _aAppropriate technology
_cUNESCO
260 _aBangkok:
_bUNESCO,
_c1978.
300 _av, 103p.
942 _cBK
999 _c54608
_d54608