Efficient use of fertilizers in agriculture / 
United Nations Economic Commission for Europe 
 - The Hague :  Martinus Nijhoff,  1983 
 - vi, 352 p.:  ill.  ;  25 cm. 
 - Developments in plant and soil sciences;  v. 10 .
<br/><br/> '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.' 
<br/><br/><label>LCCN: </label>83-13094 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers--Congresses<br/>Plants--Nutrition--Congresses<br/>Crop yields--Congresses