Mai, Ä. 2012 Dec 15. ÄÃ¡nh giÃ¡ biáº¿n Ä‘á»™ng lá»›p phá»§ thá»±c váºt xÃ£ HÆ°Æ¡ng SÆ¡n huyá»‡n Má»¹ Äá»©c, HÃ Ná»™i. VNU Journal of Science: Natural Sciences and Technology. [Online] 28:4