000 00522nam a2200169Ia 4500
008 160601s9999 xx 000 0 und d
100 _aLave, Lester B
_925078
245 _aTechnological chnage : its conception and measurement
260 _aEnglewood cliffs
260 _bPrentice - hall inc.
260 _c1966
300 _axx,288p.; 22cm.
650 _aAppalachian agriculture
_925103
650 _aEmpirical estimates
_925104
650 _aModels measuring change
_925105
650 _aTechnological innovations
_91646
999 _c8292
_d8292