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Christoph Helsper (3)
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1987 (3)
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Article (3)
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German
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English
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Determination and Neutralization of the Charge Produced by the Dispersion of Powders
(1987)
Christoph Helsper
;
W. Mölter
Fast and Automated Testing of Filter Media / Mölter, W. ; Helsper, C. ; Willemer, W.
(1987)
Christoph Helsper
;
W. Mölter
;
W. Willemer
Theoretische Bestimmung des Abscheidegrades eines Filters bei verschiedenen Betriebszuständen / Bartz, H. ; Helsper, C.
(1987)
Christoph Helsper
;
H. Bartz
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