@article{f0775b56e5f94e8faba6673072532453,
title = "Changes in the soil environment from excessive application of fertilizers and manures to two contrasting intensive cropping systems on the North China Plain",
author = "X.T. Ju and C.L. Kou and Peter Christie and Z.X. Dou and F.S. Zhang",
year = "2007",
month = jan,
doi = "10.1016/j.envpol.2006.04.017",
language = "English",
volume = "145",
pages = "497--506",
journal = "Environmental Pollution",
issn = "1873-6424",
publisher = "Elsevier Ltd",
number = "2",
}