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Kvasny Prum. 1955; 1(8): 183-185 | DOI: 10.18832/kp1955046
The authors point out the soiling of beerbottles by chrysalises of Drosophila fenestrarum which cannot be removed in modern brushless washing maschines. The article proposes measures to eliminate this defect.
(In Czech, English summary only).
Published: August 1, 1955