000 00323nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aPeng
245 0 _a"Traditional technology, reglected component of appropriate technology"
260 _bUnited Nations University
260 _c1980
365 _b16.40
942 _cBK
999 _c205768
_d205768