Search query: "Author"=Valkova, P.$
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Source: AGRICULTURAL SCIENCE AND TECHNOLOGY
Year published: 2009
Volume: 1, 4
Pages: p. 137-144
Signature: Б 460
ID: TUNAR0065205

Source: BULGARIAN JOURNAL OF AGRICULTURAL SCIENCE
Year published: 2012
Volume: 18, 3
Pages: p. 342-347
Signature: А 1184
ID: TUNAR0080238

Source: AGRICULTURAL SCIENCE AND TECHNOLOGY
Year published: 2012
Volume: 4, 4
Pages: p. 440-444
Signature: Б 460
ID: TUNAR0084868

Manganese levels in water, sediment and algae from waterbodies with high anthropogenic impact;  
Source: AGRICULTURAL SCIENCE AND TECHNOLOGY
Year published: 2013
Volume: 5, 2
Pages: p. 206-211
Signature: Б 460
ID: TUNAR0085979
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