000 004000000a22001450004500
005 20251028083517.0
008 190313s9999 xx 000 0 und d
020 _a033324206
082 _a609.1724
_bDUN
100 _aDun,P.D.
245 0 _aAppropriate Technology /
_cP.D.DUN
260 _aTokyo:
_bThe Macmillan Press Ltd.,
_c1978
504 _aIncludes bibliography & index.
650 _aTechnology
999 _c36614
_d36614