000			00373nam a2200133Ia 4500
008			211215s9999 xx 000 0 und d
040			_cJayakar Knowledge Resource Centre
100			_aAllen, F R
245		0	_aTecnology and social change
260			_bAppleton-Century-Crofts _aNew York _c1957
300			_axii, 529 p.
653			_aTecnology- social aspects
942			_c1
999			_c45535 _d45535