| 000 | 00504 a2200169 4500 | ||
|---|---|---|---|
| 020 | _a0854030956 | ||
| 080 |
_a631.5 _bR 888 A |
||
| 245 | 1 | _aAgricultural efficiency | |
| 260 |
_aLondon _bRoyal Society _c1977 |
||
| 650 | _aAgricultural Efficiency | ||
| 650 | _aInputs | ||
| 500 | _aAlso published as philisophical transactions of the Royal Society of London, Series B. V. 281 (980) 73-301 | ||
| 100 |
_a _d |
||
| 300 | _a227 p. | ||
| 040 | _aIARI, New Delhi | ||
| 901 | _a179852 | ||
| 999 |
_c81100 _d81100 |
||