[1]
Halicki, W. and Szymańczyk, A. 2006. Nutrient Substances in Surface Water of Extensive Agriculture Areas.
ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference. 1, (Jun. 2006), 102–107
. DOI:https://doi.org/10.17770/etr2003vol1.1993.