Erosion control field management for protecting agricultural land in the republic of Bulgaria from water erosion Agriculture machinery usage and its current problems

Dimitrov, P., & Beloev, H. (). Erosion control field management for protecting agricultural land in the republic of Bulgaria from water erosion Agriculture machinery usage and its current problems. // <I>International<D> scientific conference Agriculture machinery usage and its current problems, Cesky Krumlov, 2006. - Ceskych Budejovicich : Jihoceska univerzita v Ceskych Budejovicich, 2006, p. 410-414..