“USE OF PEATY ELIXIR ON SPRING RAPE AND POTATO SOWINGS FOR IMPROVEMENT OF PRODUCTION FERTILITY AND QUALITY”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 23, 2007): 157–161. Accessed March 11, 2026. https://archive-journals.rtu.lv/etr/article/view/3652.