Effects of Combined Application of Solid Pyrolysis Products and Digestate on Selected Soil Properties of Arenosol and Plant Growth and Composition in Laboratory Experiments oleh Miklós Gulyás, Edward Someus, Szandra Klátyik, Márta Fuchs, Zsolt István Varga, Sándor Dér, György Fekete, Imre Czinkota, András Székács, Csaba Gyuricza, László Aleksza