000			01740nam a2200325u 4500
001			00638625
003			PWmBRO
008			830615s1983 ne a b 10000 eng
020			_a9024728665
039	0		_a2 _b3 _c3 _d3 _e3
041	0		_aengfre
050	0		_aS631.3 _b.S96 1983
082	0		_a631.8/1�19
090			_b631.81/S989e
111	2	0	_aSymposium on Research into Agro-technical Methods Aiming at Increasing the Productivity of Crops--Co-efficients for the Most Efficient Use of Fertilizer Nutrients and Means for Reducing the Losses of Nutrients to the Environment under the Conditions of Intensive Agriculture _d(1983 : _cGeneva, Switzerland)
245	1	0	_aEfficient use of fertilizers in agriculture.
260	0		_aThe Hague : _bMartinus Nijhoff/Dr. W. Junk for the United Nations, _c1983.
300			_avi, 352 p. : _bill.
440		0	_aDevelopments in plant and soil sciences ; _vv. 10
500			_aEnglish and French.
500			_a"Proceedings of the Symposium on Research into Agro-technical Methods Aiming at Increasing the Productivity of Crops--Co-efficients for the Most Efficient Use of Fertilizer Nutrients and Means for Reducing the Losses of Nutrients to the Environment under the conditions of Intensive Agriculture; organized by the Agriculture Section of the United Nations Economic Commission for Europe; held at Geneva, Switzerland, 17-21 January 1983."
500			_a"United Nations Economic Commission for Europe."
650		0	_aFertilizers.
650		0	_aCrops _xNutrition.
650		0	_aCrop yields.
710	2	0	_aUnited Nations. _bEconomic Commission for Europe. _bAgriculture Section.
710	2	0	_aUnited Nations. _bEconomic Commission for Europe.
942			_2ddc
994	0	1	_aT1001 041 151
999			_c34848 _d34848