Author: Arjybek Madraimov, Borkica Stojmenova, Themistocles Pavlis, Damianos Damianidis, Athanasios Gertsis
organic matter
38. Chemical and instrumental methods for determination of the organic matter component of the soils
Author: R. Ilieva, E. Filcheva, I. Iliev, M. Todorova, R. Popova, V. Valcheva, M. Almaliev, K. Trendafilov
44. Soil characteristics of the experimental field belonging to the Fruit-Growing Department (Agricultural University – Plovdiv), located in the area of the village of Brestnik
Author: Rada Popova, Galya Dobrevska, Hristo Dzhugalov, Pantaley Kaymakanov, Hristo Paralinov