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File:1992. Helicopters spraying Bacillus thuringiensis var. kurstaki (Btk) for Asian gypsy moth eradication. Washington. (35228762094).jpg - Wikimedia Commons
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Bacillus Thuringiensis, Thuringiensis, 68038-71-1 in Connaught Place, New Delhi , International Panaacea Limited | ID: 16856191562
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