000			00965nam a2200325 a 4500
001			2300047
003			BD-DhUL
005			20150108181341.0
008			820419s1981 enka b 001 0 eng
010			_a 80042231
015			_aGB***
020			_a0126565600
040			_aDLC _cDLC _dDLC _dBD-DhUL
050	0	0	_aS494.5.P75 _bS63
082	0	0	_a631.5 _219 _bSPB
100	1		_aSpedding, C. R. W.
245	1	0	_aBiological efficiency in agriculture / _cC.R.W. Spedding, J.M. Walsingham, and A.M. Hoxey.
260			_aNew York : _bAcademic Press, _cc1981.
300			_ax, 383 p. : _bill. ; _c23 cm.
365			_aTK _b2800.00
504			_aIncludes bibliographies and index.
650		0	_aAgricultural productivity.
650		0	_aBiological productivity.
650		0	_aAgriculture.
650		0	_aBiology, Economic.
700	1		_aWalsingham, J. M.
700	1		_aHoxey, A. M.
906			_a7 _bcbc _corignew _d2 _eocip _f19 _gy-gencatlg
942			_2ddc _cBK
999			_c29154 _d29154