ELEMENTAL ANALYSIS OF MEDICINAL LEECH ArticlePleteneva T.V., Mokrousov A.A., Maksimova T.V., Luzanova I.S., Tambovtseva M.A., Syroeshkin A.V.Khimiko-Farmatsevticheskii Zhurnal. Vol. 44. 2010. P.. 46-48
