Švarta, A. and Vigovskis, J. 2005. ECOLOGICALLY SAFE GROWING TECHNOLOGIES FOR SPRING BARLEY ON ORGANIC FARMING. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference. 1, (Jun. 2005), 128–134. DOI:https://doi.org/10.17770/etr2005vol1.2148.