SETH SOVONG <br/><br/>
Effect of urea rate on growth of green mustard hydroponic condition during the early rainy season,(ឥទ្ធិពលនៃកំរិតជីអ៊ុយរ៉េ លើដំណាំស្ពៃខៀវដំាក្នុងលក្ខខណ្ឌសូលុយស្យុង នៅដើមរដូវវស្សា) 

 - phnom penh   RUA   2005 
 - xiii,58p.  ill.  29cm. 
<br/><br/><label>Dewey Class. No.: </label>AGR SET  2005 B032 Or.1