Soil Pollution with Trace Elements in Territories of Military Grounds in Latvia
Ilga Kokorīte, Māris Kļaviņš, Jānis Šīre, Oskars Purmalis, Aija Zučika
Influence of the humification process on the properties of peat humic acids
Jānis Šīre, Māris Kļaviņš
Experimental Study of Peat Humification Indicators
Jānis Šīre, Māris Kļaviņš, Oskars Purmalis, Viesturs Melecis