| 000 | 00730nam a2200265 a 4500 | ||
|---|---|---|---|
| 001 | 00312037 | ||
| 003 | PWmBRO | ||
| 005 | 20240602101520.0 | ||
| 008 | 821020s1981 enka a 0011 eng l | ||
| 082 | 0 | 0 | _a630 |
| 090 | 0 | 0 | _b630/S741b |
| 100 | 1 | 0 | _aSpedding, C. R. W. |
| 245 | 1 | 0 |
_aBiological efficiency in agriculture _cC.R.W. Spedding, J.M. Walsingham, and A.M. Hoxey |
| 260 | 0 | 0 |
_aLondon _aNew York _bAcademic Press _c1981 |
| 300 | 0 | 0 |
_ax, 383 p. _bill. _c23 cm |
| 595 | 0 | 0 | _a0126565600 |
| 650 | 0 | 0 | _aAgricultural productivity |
| 650 | 0 | 0 | _aBiological productivity |
| 650 | 0 | 0 | _aAgriculture |
| 650 | 0 | 0 | _aBiology, Economic |
| 700 | 1 | 0 | _aWalsingham, J. M. |
| 700 | 1 | 0 | _aHoxey, A. M. |
| 942 | _2ddc | ||
| 999 |
_c43827 _d43827 |
||