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040 _aCentral Library-NITS
041 _aEnglish
082 _a620.91724
_bCAR
100 _aCarr, Marilyn
245 _aEconomically appropriate technologies for developing countries
_cby Marilyn Carr
260 _aNottinghum
_bRussel Press
_c1977
300 _a101p.
650 _aEngineering - developing countries.
942 _cBK
999 _c2195
_d2195