Goldhamer, David A. <br/><br/>
The effects of water percolation and organic matter on the fate of nitrogen-15 ammonium-sulfate in flooded soil / 
David A. Goldhamer 
 - 3 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D.)_-University of California, 1980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil chemistry.<br/>Nitrogen.