| 000 | 00438pam a2200145a 44500 | ||
|---|---|---|---|
| 008 | 170807b1987 xxu||||| |||| 00| 0 eng d | ||
| 082 | _a338.064/NEL | ||
| 100 | _aNelson, Richard R | ||
| 245 | _aUnderstanding technical change as an evolutionary process | ||
| 260 |
_aAmsterdam _bNorth Holland _c1987 |
||
| 906 | _a2424 | ||
| 942 |
_2ddc _cBK |
||
| 999 |
_c2539 _d2539 |
||