广东惠州市土壤七氯残留状况及空间分布特征
马瑾, 周永章, 万洪富
Residues and Spatial Distribution of Heptachlor in Soils of Huizhou,Guangdong Province
MA Jin, ZHOU Yong-Zhang, WAN Hong-Fu
生态与农村环境学报 . 2008, (4): 87 -89 .