| 000 | 00382 a2200133 4500 | ||
|---|---|---|---|
| 080 |
_a631.312.68 _bG 394 F |
||
| 245 | 1 |
_aForces acting during the ploughing on stony ground _cby G. Getzlaff |
|
| 260 |
_aWrest Park _bNational Institute of Agricultural Engineering _c1953 |
||
| 650 | _aStony Ground | ||
| 650 | _aPlough | ||
| 100 | 1 |
_aGetzlaff, G. _d |
|
| 300 | _a9 p. | ||
| 901 | _a144087 | ||
| 999 |
_c80155 _d80155 |
||