TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
T1  - Calibration of the Polytec HC-15 and HC-70 Optical Particle Counters / Fißan, H. J. ; Helsper, C.
T2  - Aerosols in the mining and industrial work environments, Vol. 3. Instrumentation, Marple, Virgil A. ; Liu, Benjamin Y.
Y1  - 1983
UR  - https://opus.bibliothek.fh-aachen.de/opus4/frontdoor/index/index/docId/2274
N1  - International Symposium on Aerosols in the Mining and Industrial Work Environment ; (1981.11.01-06 : ; Minneapolis/Minn.)
SP  - 825
EP  - 829
PB  - Ann Arbor Science
CY  - Ann Arbor, Mich.
ER  -