Beek, J. <br/><br/>
Simulation of nitrogen behaviour in soils/ 
J. Beek and M.J. Frissel 
 - Wageningen:  Centre for Agricultural Publishing and Documentation,  1973 
 - 67p. 
 - Simulation monographs .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil chemistry<br/>Soils--Nitrogen content