黄河花园口河段氨氮污染变化趋势及规律研究

石岩;杨崇豪;孙垦

Study on Tendency and Law of Ammonia Nitrogen Contamination Variation at Huayuankou Section on the Lower Yellow River

SHI Yan;YANG Chong-hao;SUN Ken

人民黄河 . 2005, (11): 33 -34 .