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 | _a179134 | ||
999 |
_c81099 _d81099 |