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Christoph Helsper (3)
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1984 (3)
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Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R.; Helsper, C.; Rönicke, G.
(1984)
Christoph Helsper
;
R. Nießner
;
G. Rönicke
Calibration of Optical Particle Counters with Respect to Particle Size / Fißan, H. J. ; Helsper, C.; Kasper, W.
(1984)
Christoph Helsper
;
H. J. Fißan
;
W. Kasper
Kalibrierung der Partikelgrößenbestimmung von optischen Partikelzählern / Fißan, H. J.; Helsper, C. ; Kasper, W.
(1984)
Christoph Helsper
;
H. J. Fißan
;
W. Kasper
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