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Effect of the defoliation on the some maize hybrids development and yield elements
Yordanov, G. AGRICULTURAL ACADEMY SOFIA 1997 p.7-9
Dependence of maize productivity on the data of sowing in South-East Bulgaria
Gramatikov, B. AGRICULTURAL ACADEMY SOFIA 1997 p.10-12
Valchev, D. AGRICULTURAL ACADEMY SOFIA 1997 p.13-19
Goranov, K. AGRICULTURAL ACADEMY SOFIA 1997 p.20-25
Biological characterization of newly bred oriental tobacco lines in North Bulgaria
Dimitrova, S. AGRICULTURAL ACADEMY SOFIA 1997 p.26-29
Adaptability of some cotton cultivars and hybrids (F~1) to stress factors
Bojinov, M. AGRICULTURAL ACADEMY SOFIA 1997 p.30-35
Sadicou, T. AGRICULTURAL ACADEMY SOFIA 1997 p.36-39
Studying of maize hybrids from different agroecological groups cultivated for silage
Pavlov, D. AGRICULTURAL ACADEMY SOFIA 1997 p.40-41
Efficiency of a separate and combined application of minerals in winter grain peas, variety No. 11
Petkov, N. AGRICULTURAL ACADEMY SOFIA 1997 p.42-48
Comparative study of different sorghum hybrids cultivated as second crop to produce grain and silage
Gramatikov, B. AGRICULTURAL ACADEMY SOFIA 1997 p.49-51