Author: Malgorzata Berova, Nevena Stoeva, Zlatko Zlatev, Tsvetelina Stoilova, Georgi Popov
Scientific Works Academic Publishing House of the Agricultural University – Plovdiv
ISSN 1312-6318
Author: Malgorzata Berova, Nevena Stoeva, Zlatko Zlatev, Tsvetelina Stoilova, Georgi Popov