Subjects: TOBACCO; TOBACCO products; AGRICULTURAL economics
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Subjects: BURLEY tobacco; SPECIES hybridization; BIOINDICATORS
Subjects: AGRICULTURAL economics; LAND management; AGRICULTUREBULGARIA
Subjects: AGRICULTURAL productivity research; AGRICULTURAL policy; SMALL farmsBULGARIA
Subjects: ANIMAL industry; AGRICULTURAL economics; ECONOMIC competitionKAZAKHSTAN
Subjects: SMALL farms; SMALL business research; HORTICULTURE & economics